The American College of Physicians (ACP) is a national organization of internists. Doctors of internal medicine focus on adult medicine and have had special study and training focusing on the prevention and treatment of adult diseases. The ACP provides information for patients and families on the organization's website, including information on diseases and conditions, end-of-life care, women's issues, and immunizations. The site also offers video news stories, health tips, special reports, and a link to the ACP diabetes webpage.

This Web site provides information about the diagnosis and treatment of chronic fatigue syndrome. It also includes information to help you find a support group for people with CFS. The site is maintained by the National Center for Infectious Diseases of the Centers for Disease Control and Prevention (CDC).

The CFIDS Association of America works to build support for people suffering from chronic fatigue and immune dysfunction syndrome (also known as chronic fatigue syndrome). The organization offers educational information and other resources to people with CFS, their family and friends, support groups, caregivers, the general public, and health professionals.