Author:Lynn West, MD
Date Written:
Editor:Duff, Ellen, BA
Edit Date:08/25/00
Reviewer:Gail Hendrickson, RN, BS
Date Reviewed:07/24/01
Professional Guide to Diseases, Sixth Ed., Springhouse, 1998
Harrison's Principles of Internal Medicine, 1998, Fauci et al
The Merck Manual of Medical Information, 1997