http://www.nih.gov/google/google.search.nih.html
National Institutes of Health, U.S. Department of Health and Human Services
Search all of NIH institutes web sites by keyword, title, author, etc. for information on a wide range of health and disease topics, including AIDS, cancer, child health, dental health, chronic diseases, health and wellness, cardiovascular diseases, immunization, infectious diseases, mental health, nutrition, maternal and child health, and substance abuse.