|
iTeleHealth Publications
Introduction to Telemedicine
by Jo
Ann Klein, MS, RN-CFor more than three decades, the use of advanced
telecommunications and information technologies has been investigated in an effort to
improve health care. In particular, the focus has been centered on telemedicine, which is
also referred to as telehealth in some arenas. Telemedicine has been defined as the
electronically-transmitted rapid exchange of medical information between sites of clinical
practice for the purposes of relief and/or education (Ausseresses, 1995). Telemedicine is
also defined as the use of electronic information and communication technologies to
provide and support health care when distance separates the participants (National Academy
Press, 1996). A broader definition is the use of telecommunication technologies to provide
medical information and services (Perednia & Allen, 1995). For telemedicine to be
successful, there must be an ability to clearly transmit a clinical situation, including
clinical information of diagnostic quality, to a clinician located far from the point of
need, and the ability for that clinician to effectively communicate concerns, additional
requirements needed for diagnosis, or the provision of a diagnosis back to the point of
need.
Telemedicine may be seen as
a valuable tool for providing: (1) badly needed specialty care to underserved areas, (2) a
more efficient use of existing medical resources, (3) a way to attract patients living
outside a hospitals catchement area, and (4) a way of bringing international health
care dollars to the United States (Perednia & Allen, 1995).
The focus of this paper is to
examine legislation related to telemedicine, with a particular emphasis on Senate Bill
S.385, The Comprehensive Telehealth Act of 1997, sponsored by Senator Kent Conrad of North
Dakota and presented to the 105th Congress in March 1997. This documentation
represents a political action plan for the support of this federal legislation whose
primary benefit is to provide reimbursement under the Medicare program for telehealth
services, and other purposes. The historical development of this issue will be examined in
terms of social, economic, ethical, legal, and political considerations. The proponent and
opponent points of view will be presented. Also, a record of communications with
professional organizations, legislators, consumer interest groups, and health care
providers involved in telemedicine efforts will describe student group participation in
the political process.
Telemedicine Background
Telemedicine encompasses a wide
variety of technologies ranging from the telephone to high-tech equipment that enables
health care professionals (including physicians, nurses, and other allied health
professionals) to provide health care thousands of miles away from the point of service.
It includes interactive video equipment, fax machines, and computers, along with
satellites and fiber optics. The wide scope of applications for telemedicine includes
patient care, education, research, administration, and public health to diagnose, deliver
care, transfer health data, read x-rays, provide consultation, and educate health
professionals (Conrad, 1996).
Historically, access to health care
has been the primary force driving the development of telemedicine. As early as 1959,
interactive television utilizing microwave technology was used for telepsychiatry
consultations in Nebraska (Perednia & Allen, 1995). The National Aeronautics and Space
Administration (NASA) played an important part in the early development of telemedicine
when humans first began flying in space. Physiological parameters were transmitted via
communication satellites from both the spacecraft and the space suits during missions.
These early efforts in space were applied to rural medicine in the early 1970s
through the Space Technology Applied to Rural Papago Advanced Health Care (STARPAHC)
program.
The STARPAHC program delivered
medical care to the Papago Indian Reservation in Arizona. The program was conceived by
NASA, engineered by NASA and Lockheed, and implemented and evaluated by the Papago people,
the Indian Health Service, and the Department of Health, Education, and Welfare
(Ausseresses, 1995; Perednia & Allen, 1995; Telemedicine Information Exchange, 1996).
Other early US-based telemedicine projects included the Alaska ATS-6 Satellite Biomedical
Demonstration, the North-West Telemedicine Project, a project conducted by Memorial
University of Newfoundland, and a cooperative project between Massachusetts General
Hospital and Logan Airport (Telemedicine Information Exchange, 1996).
In general, these early
telemedicine applications focused on remote populations scattered among mountainous areas,
islands, open plains, and arctic regions where medical care was limited at best.
Unfortunately, most of the telemedicine projects from the 1960s through the early
1980s failed to survive the end of grant funding or trial financing.
Telecommunication costs were too high and technologies were awkward to use. Few projects
appeared to be guided by business plans that would sustain the program.
Interest in telemedicine grew in
the mid-1980s when costs dropped for many of the information and communication
technologies on which the efforts relied. Development of the National Information
Infrastructure (NII) made these technologies more commonplace and easier to use. To date,
telemedicine demonstration projects are underway, under the direction of NII, to determine
the essential parameters and conditions enabling the implementation of telemedicine in
rural community settings. The subject populations within these community settings are
members of minority groups or are over 65 years of age, and are low income and under the
poverty level. Many only have occasional access to transportation (Telemedicine for Rural
South Carolina, 1997).
The power of telemedicine is
abundantly apparent. Throughout the United States, providers are experimenting with a
variety of telemedicine approaches in an effort to improve access to quality health care
services. These programs are demonstrating that telecommunications technology can
alleviate time constraints induced by time and distance and reduce cost as well as reduce
the inconvenience of transporting patients to medical providers (Bloom, 1996). In
addition, the development of a national information infrastructure through initiatives by
the Joint Working Group and NII, provide the potential for rural Americans to have the
access to health care that most Americans take for granted.
Legislative Actions
In 1994, Senator Kent Conrad of
North Dakota formed the Ad Hoc Steering Committee on Telemedicine and Healthcare
Informatics to explore telehealth and related issues. The committee consisted of
telehealth experts representing the federal government, private industry, and health care
professionals. Their purpose was to evaluate federal policies on telehealth and how to use
telecommunications technology more effectively to increase access to health care
throughout America. From meetings and policy forums held by this committee, it became
clear that there was an enormous effort being expended by the federal government and
private industry devoted to health care. Because so many rural and underserved communities
lack the ability to attract and support a wide variety of health care professionals and
services, telehealth was suggested as a way to bring important health care services into
these communities.
On September 30, 1996, Senator
Kent Conrad of North Dakota, during the second session of the 104th Congress,
sponsored the "Comprehensive Telehealth Act of 1996 (S. 2171)" in an effort to
provide reimbursement under the Medicare Program for telehealth services and for other
purposes and to improve health care delivery in rural and underserved communities
throughout the United States through the use of telecommunications and telehealth
technology. It was introduced to the Senate by Senator Conrad as well as Senator Bob
Kerrey of Nebraska.
Senator Conrad told the Senate
that telehealth provides an answer to medically underserved communities by bringing
services to remote areas in a quick, cost-effective manner, and by enabling patients to
avoid traveling long distances in order to receive health care treatment (Thomas
Legislative Information on the Internet, 1996). In particular, this bill required the
Health Care Financing Administration (HCFA) to put into place a reimbursement system for
telehealth activities under Medicare recognizing that Medicare reimbursement is an
essential component in helping the integration of telehealth into the health care
infrastructure. The bill addressed Medicare B reimbursement for "professional
consultation via telecommunications with an individual or entity furnishing a service for
which payment made be made under such part to a Medicare beneficiary residing in a rural
area, notwithstanding that the individual health care practitioner providing the
professional consultation is not at the same location as the individual furnishing the
service to the Medicare beneficiary" (Arent Fox, 1996). In addition, the legislation
suggested that the methodology for determining the amount of payments should include the
"cost of the consultation service, a reasonable overhead adjustment, and a
malpractice risk adjustment" (Arent Fox, 1996).
Other issues addressed by this
bill included interstate licensing and disciplinary action of telemedicine providers,
records maintenance and federal reporting of telemedicine initiatives in rural
communities, research and development of telemedicine programs to determine
cost-effectiveness in rural communities, grant and loan criteria for establishing
telemedicine programs, and the mission and delineation of responsibilities of the Joint
Working Group on Telemedicine under a newly designated name, Joint Working Group on
Telehealth, directed by an appointee of the Director of the Office of Rural Health Policy
(Arent Fox, 1996). The bill was introduced on the last day of the 1996 legislative section
where it was read twice and referred to the Committee on Finance, and no further action
was taken (Thomas Legislative Information on the Internet, 1997).
On March 3, 1997, this bill was
reintroduced to the Senate by Senator Conrad under the name, "The Comprehensive
Telehealth Act of 1997 (S.385)". This time, Senator Conrad was supported in a
bi-partisan effort by Senator Kerrey of Nebraska, Senator Harkin of Iowa, Senator
Wellstone of Minnesota, Senator Baucus of Montana, Senator Cochran of Mississippi, and
Inouye of Hawaii. In this iteration of the bill, frontier communities were included in
addition to rural and underserved communities. The same issues of Medicare reimbursement,
telehealth licensure, periodic reports to Congress for the Joint Working Group on
Telehealth (JWGT) and the development of telehealth networks through federal financial
assistance are addressed.
After the bill was introduced, it
was referred to the Senate Finance Committee. Currently, the bill is split based on
concurrent committee jurisdiction, with Subtitle A (Medicare Reimbursement) remaining with
the Finance Committee, and the remaining subtitles (Licensure, JWGT, and Loan and Grant
Program) being sent to the Labor and H.R. Committee. It is expected that the Labor
Committee will examine the issues shortly.
In the Finance Committee, after
only debate about the total potential cost , the Medicare provision was included in the
final bill that the Finance Committee sent to the floor. The bill was passed by the Senate
on a voice vote. The means that limited Medicare reimbursement is included in the Senate
version of the Reconciliation bill. Under this proposal approximately 1276 rural counties
with concentrations of over 50,000 people will be eligible for reimbursement. This
represents nearly one-third of all rural counties.
The issue of telemedicine in
Congress has focused on cost rather than need. At this time, there is over a billion
dollars worth of legislation related to telemedicine that has been introduced to Congress.
The challenge of this Congress, faced with funding limitations, will be whether to approve
bills that globally address the nation, such as Senator Conrads bill, or to approve
bills that affect single states.
Social Implications
The social issues surrounding
telemedicine include: (1) if health care is a right, can telemedicine services reasonably
be withheld anywhere where there is access to telecommunications; and (2) who will be
allowed to provide telecommunication services. So far, there has been very little
discussion of these social issues. Instead, existing studies have focused on the
psychosocial impact of telemedicine on consumers as well as providers.
One of the greatest benefits of
telemedicine is reducing the distance and isolation in patient and practitioner
encounters. Diane Bloom (1996), in her study of a North Carolina rural population
utilizing telemedicine, determined that telemedicine saves time and reduces discomfort for
the provider and the patient. There was real communication reported between the patient
and the health care provider. This was further enhanced by the use of a large screen to
create life-sized images, which immediately increased the intimacy and immediacy of a
face-to-face encounter. She found that the patients preferred telemedicine visits over
in-office encounters because they were more comfortable and less intimidating. In
addition, patients reported being more self-assured and better focused without the
physician being physically in the room. Also, because of the lack of interruptions, the
patients reported feeling "supported and good". It should be noted that age
demographics for Blooms study were not cited in the available literature.
The Telemedicine for Rural South
Carolina Study found that while younger patients readily accepted telemedicine as a mode
of health care delivery, many older rural patients were uncomfortable with the presence of
cameras, computers, and recorders during their examination (Telemedicine for Rural South
Carolina, 1997).
From the providers
perspective, Bloom (1996) found that televideo reliance on verbal communication made some
physicians more communicative and less distracted. The providers reported feeling as if
the patients were in the office. In addition, providers felt that encounters with
multi-consultations, through telemedicine, were superior to the conventional style of
consultations. Involving the patient, referring physician, and specialist at the same time
improved communication and care. For both patients and physicians, available home
videotapes of the encounters allowed for review of information that may have been unclear
during the encounter. The primary social disadvantage was reported by nurses who missed
the physical contact of touching patients.
Perhaps the greatest challenge to
introducing telemedicine in rural communities is a human one. Rural physicians are
typically burdened with the tasks of treating patients and are very resistant to using the
telemedicine technology. This is particularly true of the older providers. On the other
end of the process, urban specialists with established practices are often hesitant to
meet the scheduling needs of a telemedicine program. Both groups of providers take issue
with using technology to practice medicine without the official acceptance of telemedicine
as a proper standard of medical care (Telemedicine for Rural South Carolina, 1997).
These issues lead to broader scale
obstacles that limit the widespread use of telemedicine. Competition among vendors has
prevented the development of hardware and software standards. This makes it difficult and
frustrating to assemble system components that work together. Also, technical systems may
be poorly adapted to the human infrastructure of health care. This refers to the work
environment, needs, and preferences of clinicians, patients, and other decision-makers.
Sustainable telemedicine programs also require attention to organizational business
objectives and strategic plans that are not always evident in current applications.
Economic Implications
Support for the telemedicine
project developed because of profound changes within the nations health care system
and because of the relentless financial pressures to fund affordable and readily available
services. An important premise of telemedicine is that affordability of health care leads
to increased access to health care. This, in turn, leads to increased utilization of
health care and, thus, a healthier population. The primary allure of telemedicine has
become the universality of its utilization from urban to rural settings. In particular,
telemedicine offers a mechanism for centralizing specialists and supporting primary care
clinicians. Managed care plans realized the financial potential of utilizing telemedicine
applications in concentrated patient areas. Academic medical centers and other
organizations facing reduced revenues and exclusion from managed care organizations view
telemedicine as a methodology to internationally market their highly specialized
clinicians (National Academy Press, 1996). Home telemedicine, which enables ambulatory
patients to live at home under the supervision of home health nurses, is viewed as
effective in reducing costs that may be occurred by expensive inpatient stays in nursing
home facilities (Burdick, 1996).
Despite its advantages, clinicians
may see telemedicine as an economic threat due to increased competition, structural
alliances, and surpluses of some categories of health professionals. In addition, the
current lack of payment for telemedicine service is considered to be one of the major
barriers to its deployment. Most third party payers have taken a "wait and see"
approach toward telemedicine reimbursement. Very few private payers cover telemedicine
consultation services, although most cover radiology and imaging services (Grigsby,
Kaehny, & Sandberg, 1995).
Federal and state government
reimbursement for telemedicine services is variable, and depends on the service. Under
Medicare, if standard medical practice does not require face-to-face contact between the
patient and the health care provider, then the service is covered. Covered services
includes teleradiology and other methods of direct visualization including
electrocardiograms (ECG), and electroencephalograms (EEG) (Telemedicine Report to
Congress, 1997).
Since Medicare and Medicaid
coverage of services often overlap or parallel one another, it is important to examine the
current Medicaid practices related to telemedicine. Medicaid coverage varies from state to
state. Operating within broad parameters of federal laws and regulations, each state
establishes its own eligibility standards and determines the type, amount, duration, and
scope of services in addition to setting the rate of payment for these services. As of
January 31, 1997, only Arkansas, California, Georgia, New Mexico, North Dakota, Montana,
South Dakota, Utah, Virginia, and West Virginia reimbursed some telemedicine services
through Medicaid (Telemedicine Report to Congress, 1997).
Another challenge to Medicaid
reimbursement for states covering telemedicine services is that a number of different
strategies must be developed for reimbursing the health professional at the hub site for
the consultation and the health care professional at the satellite site for the office
visit.
Much of the political action
driving telemedicine is derived from the anticipated use of managed care incentives to
provide accessible, low-cost health care to all Americans. Health maintenance
organizations (HMOs) and physician-hospital alliances are competing for regional contracts
on the basis of cost, quality, and access to care (Perednia & Allen, 1995). In the
managed care arena, telemedicine is seen as a tool that could help manage the medical and
financial risks of providing patient care in rural and underserved areas.
Other economic considerations
include the cost of equipment and of information transmission. The Telemedicine for Rural
South Caroline Study determined that a major impediment to the wide-spread implementation
of telemedicine in rural areas is the lack of resources for acquisition of appropriate
telecommunications equipment (Telemedicine for Rural South Carolina, 1997). The cost of
transmission will vary based upon the amount of bandwidth, frequency of use, and distance
involved (Ausseresses, 1995). While the cost of such services may be incorporated into the
fee for a covered service, it brings up a more looming issue. This is whether the
additional benefits provided to patients and health care providers by telemedicine are
worth the potential additional costs of providing the service. This, in particular, is of
concern to the Medicare and Medicaid programs which face consistent threats to their
financial solvency.
It should be noted that Medicare,
through the Health Care Financing Administration (HCFA), recognizes that telemedicine
holds great promise for breaking down barriers to quality medical care, particularly
specialty care in rural under-served areas. HCFA also recognizes that telemedicine may
also save health care expenditures for beneficiaries, providers, and payers through
reduced costs for patient and/or health professional travel, medical education,
inter-hospital patient transfer, and patient record keeping. Medicare is helping to
finance several studies and projects that examine the cost effectiveness of telemedicine
through the disbursement of nearly nine million dollars in appropriated funds for research
and demonstrations. These studies are coordinated with the Office of Rural Health Policy
which is collecting evaluative information on rural telemedicine programs and on other
agencies such as the National Library of Medicine and the Agency for Health Care Policy
and Research (Telemedicine Report to Congress, 1997).
The case for new or continued
investment in telemedicine remains incomplete, given the competition for financial
resources in an era of budgetary retrenchment in health care and government (National
Academy Press, 1996). Most clinical applications of telemedicine have not been subjected
to systematic comparative studies that assess quality, accessibility, or cost of health
care. While it is true that telemedicine is hardly unique among health care services in
lacking evidence of its effectiveness, the increasing demand for such evidence by health
plans, patients, providers, and policymakers challenges advocates of telemedicine to
undertake more and better evaluations of its practicality, value, and affordability
(National Academy Press, 1996).
Ethical, Legal, and Political
Considerations
Telemedicine raises a number of
ethical, legal, and political concerns regarding licensure, liability, and professional
accountability, particularly related to interstate practice. The purpose of licensing
health care professionals is to protect the public from incompetent or impaired
practitioners. When a telemedicine consultant crosses state lines, the issue becomes in
what state does the provider have to be licensed and which states standards of
practice must the provider adhere to. While universal cross-state licensure is already
established within the United States Department of Veterans Affairs and the Indian Health
Services, state licensure laws are perceived as a barrier to the expansion of
telemedicine. Quality review systems, standards of care, and confidentiality rulings vary
widely from state to state, and it is into this void that questions related to licensure
and malpractice fall. Recent state actions, such as that by Kansas, to tighten current
licensure laws in response to telemedicine, have raised further concerns about state
licensure (Telemedicine Report to Congress, 1997).
In May 1995, Representative Ron
Wyden of Oregon offered and then withdrew an amendment which would have prohibited states
from "directly or indirectly" restricting interstate commerce with a licensed
provider in another state using any advanced telecommunications service. This action led,
in part, to a call for an examination of telemedicine issues. The results of such an
examination were reported in the Telemedicine Report to Congress, which was
released to the public on January 31, 1997 (Telemedicine Report to Congress, 1997).
Representative Wydens action also prompted the introduction of Conrads
"Comprehensive Telehealth Act of 1996" which, in addition to addressing Medicare
reimbursement, directed the Secretary of Health and Human Services to make an annual
report to Congress on licensure barriers to telehealth and to eliminate any barriers to
the provision of telehealth services across state lines (Arent Fox, 1996). As previously
noted, no action was taken on this legislation by Congress.
The American Telemedicine
Association News Digest, Spring 1997 edition, cited the following legislation actions
related to telemedicine which have been adopted by some states: (1) Arizona passed a law
that defines telemedicine, requires informed consent, and specifies that insurance
carriers cannot require face-to-face contact between provider and patient; (2) Arkansas
has appropriated four million dollars for distance learning and telemedicine; (3)
California changed its legal framework for the Telemedicine Development Act of 1996 so
that telephone conversations between patients and providers are not considered
telemedicine and telemedicine must be within the scope of practice of the provider and
does not alter the legal parameters of the provider; (4) Hawaii adopted a law concerning
rules for out-of-state providers; (5) in Illinois, an Illinois license is required to
practice telemedicine in Illinois, and a feasibility study is currently being done to
determine whether telemedicine will work with homebound individuals and rural residents;
(6) in Mississippi, a state license is required to practice telemedicine except when a
licensed Mississippi provider requests the consultation; (7) Texas is seeking to establish
a system to pay for telemedicine and to implement this as the Texas Medicaid system.
Private insurance carriers are not to deny coverage of telemedicine, and deductibles and
co-payments are required for this type of health care. Also, informed consent and
confidentiality is required.
New technologies have vastly
improved the ability to electronically record, store, transfer and share medical data.
While these new advances have the potential for improving health care delivery, they also
create serious questions about access and security, particularly access by unauthorized
persons. Because of the unique combination of patient data, video imaging, and electronic
clinical information that is generated between distant sites during a telemedicine
encounter, privacy and security concerns must be ensured before patients and providers
participate in the telemedicine practices. This is particularly true as it relates to
treating mental illness, substance abuse, and other conditions that carry a social stigma.
Because of a weakness in state and federal policies to protect the privacy and
confidentiality of personal medical information, this has been an area of legislative
reform proposals.
In summary, telemedicine has the
potential to radically reshape health care in both positive and negative ways and to
fundamentally alter the personal face-to-face relationship that has been the model for
medical care for generations. From a sociological perspective, telemedicine reduces
isolation and promotes quality healthcare in the most remote geographical areas of the
United States. From an economic perspective, while the expenses of setting up and
maintaining systems may be initially quite large, over time, the long term effect of
preventative health care will ultimately result in a healthier population making the
program beneficial. Ethically, politically, and legally, US policy makers are actively
addressing the issues surrounding the effective use of telemedicine as is evident by the
legislation that has been introduced in Congress during the past two years. The immediacy
of this effort is noted in the development of federal and state initiatives to: (1)
develop a national information infrastructure, (2) address the security and privacy
issues, (3) address interstate licensure issues, and (4) address reimbursement issues
through federal and state medical programs.
References
Arent Fox (1996). 104th
congress, 2nd session, S. 2171 [On-line]. Available:
http://www.arentfox.com/telemed/federal/bills/s2171.html
Ausseresses, A.
(1995). Telecommunications requirements for telemedicine. Journal of Medical Systems,
19(2), 143-151.
Bashur, R (1995).
Telemedicine effects: Cost, quality and access. Journal of Medical Systems, 19(2),
81-91.
Bloom, D (1996).
Viewpoint: The acceptability of telemedicine among health-care providers and rural
patients, Telemedicine Today, 4(3).
Burdick, A., Mahmud,
K., Jenkins, D. (1996) Telemedicine: Caring for patients across boundaries. Ostomy
Wound Management, 42(9), 26-30, 32-34, 36-37.
Dalton, C. (1996).
Telemedicine: Gift from the gods or pandora's box? Virginia Medical Quarterly, 123(3),
162-166.
Grigsby, J., Kaehny,
M., & Sandberg, E. (1995). Effects and effectiveness of telemedicine. Health Care
Financing Review.
Horton, M. (1997). The
role of nursing in telemedicine [On-line]. Available:
http://www.matmo.org/pages/library/papers/nurserol/nurserol.htm
[1997, January 28].
Houtchens, B., Allen,
A., Clemmer, T., Lindberg, D., & Pedersen, S. (1995). Telemedicine protocols and
standards: Development and implementation. Journal of Medical Systems, 19(2),
93-117.
H.R. 1555; 104th
Congress, 1st Session (1995).
Mason, D., Talbott,
S., & Leavitt, J. (Eds.). (1993). Policy and politics for nurses: Acation and
change in the workplace, government, organizations & community (2nd ed.).
Philadelphia: W.B. Saunders Company.
McMenamin, J. (1996).
Telemedicine and the law. Virginia Medical Quarterly, 123(3), 184-189.
Morse, N. (1997).
State policy update. ATA News Digest, Spring, 7-8.
National Academy Press
(1996). Telemedicine: A guide to assessing telecommunications in health care
[On-line] Available:
http://www.nap.edu/readingroom/books/telemed/summary.html
National
Telecommunications and Information Administration (1997). Telemedicine report to
congress [On-line]. Available:
http://www.ntia.doc.gov/reports/telemd/execsum.htm
Patient satisfaction
with telemedicine in a rural clinic. (1994, October). American Journal of Public
Health, 84(10) , 1693.
Perednia, D., &
Allen, A. (1995). Telemedicine technology and clinical applications. Journal of the
American Medical Association, 273(6), 483-488.
Quinn, E. (1974).
Teleconsultation: Exciting new dimension. RN , 37(2), 36-42.
Rennert, W., Hayes,
W., Hauser, G., Tohme, W., & Reese, D. (1996). The role of telemedicine in triage
decisions of pediatric emergency patients. Virginia Medical Quarterly, 123(3),
171-172.
S. 385, 105th
Congress, 1st Session, 1997.
S. 2171, 104th
Congress, 2nd Session, 1996.
Smits, H., & Baum,
A. (1995). Health care financing administration (HCFA) and reimbursement in telemedicine. Journal
of Medical Systems, 19(2), 139-142.
Telemedicine for Rural
South Carolina (1997). Telemedicine for Rural South Caroline [On-line]. Available:
http://gii-awards.com/nicampgn/264a.htm
Telemedicine
Information Exchange (1996). History of telemedicine [On-line]. Available:
http://tie.telemed.org/scripts/getpage.pl?client=text&page=history
Thomas Legislative
Information on the Internet (1997). [On-Line] Available: http://thomas.loc.gov
Yensen, J. (1996).
Telenursing, virtual nursing, and beyond. Computers in Nursing, 14(4), 213-214.
|
|