1. National Library of Medicine, National Institutes of Health, Bethesda, Maryland.
2. National Center for Research Resources, National Institutes of Health, Bethesda, Maryland.
3. University of Hawaii, John A. Burns School of Medicine, Telehealth Research Institute, Honolulu, Hawaii.
4. Department of Computer and Information Science, University of Pennsylvania, Philadelphia, Pennsylvania.
5. U.S. Army Medical Research & Materiel Command, Telemedicine and Advanced Technology Research Center, Ft. Detrick, Maryland.