Cummings David E, Shannon Michael H
Department of Medicine, Division of Metabolism, Endocrinology, and Nutrition, University of Washington, Veterans Affairs Puget Sound Health Care System, 1660 S Columbian Way, S-111-Endo, Seattle, WA 98108, USA.
Arch Surg. 2003 Apr;138(4):389-96. doi: 10.1001/archsurg.138.4.389.