American College of Rheumatology
The American College of Rheumatology (ACR) is the professional organization of rheumatologists and associated health professionals who share a dedication to healing, preventing disability, and curing the more than 100 types of arthritis and related disabling and sometimes fatal disorders of the joints, muscles, and bones. Members include practicing physicians, research scientists, nurses, physical and occupational therapists, psychologists, and social workers.
The link address is: http://www.rheumatology.org/