Author:Terry Mason, MPH
Date Written:
Editor:Crist, Gayle P., MS, BA
Edit Date:06/13/02
Reviewer:Vincent J. Toups, MD
Date Reviewed:05/07/01
Merck Manual, Whitehouse Station, New Jersey, 1995-2000
On-line medical dictionary, 2000
Mayo Clinic, Geriatric Medicine, Topics in Geriatrics, Mayo Foundation for Medical Education and Research, 1996-2000
Taber's Cyclopedic Medical Dictionary, F.A. Davis Company, Philidelphia, PA