American Council on Exercise
Healthy Heart Guide
American Fitness Professionals & Associates
Fitness Trackers for Seniors
Idea Fit Site
4EverFitness
Life Matters
Health World Online
National Institutes of Health (NIH)
Medical World Search
New England Journal of Medicine
WebMD
Mesothelioma Guide
Merck Manual of Diagnosis and Therapy
DrugWatch
Kales De-Stress Site
Nurse Practitioner Programs
Alzheimer's Association
National Family Caregivers Association
Medicare
San Francisco AIDS Foundation
Bay CHI
The HCI Bibliography
San Francisco Bay Area Chapter, ACM
Institute of Ergonomics and Human Factors
IEEE Computer Society
Usability Professionals' Association