Author:Danielle Zerr, MD
Date Written:
Editor:Duff, Ellen, BA
Edit Date:08/25/00
Reviewer:Gail Hendrickson, RN, BS
Date Reviewed:06/11/01
Harrison's Principles of Internal Medicine, Fauci et al, 1998
Current Medical Diagnosis and Treatment, 39th ed., Tierney, 2000
The Merck Manual of Medical Information, 1997