Dr. Zashin also is an attending physician at Presbyterian Hospitals of Dallas and Plano. He is a fellow of the American College of Physicians and the American College of Rheumatology and a member of the American Medical Association. Dr. Zashin is the author of Arthritis Without Pain - The Miracle of Anti-TNF Blockers and co-author of Natural Arthritis Treatment.Source:Fitzcharles et al, Arthritis and Rheumatism. Vol 52 no 12, Dec 2005.