WHO | World Health Organization

The United Nations public health arm. Monitors disease outbreaks and assesses the performance of health systems around the globe.

http://www.who.int/

AAFP - American Academy of Family Physicians

Web site of the American Academy of Family Physicians, a medical specialty society which represents more than 93,700 physicians and medical students.

http://www.aafp.org/

Directory of US Health Organizations

Find health organizations by discipline, keyword, location. From the National Institute of Health.

http://dirline.nlm.nih.gov/