Akdamar Murat K, Eltoum Isam, Eloubeidi Mohamad A
Department of Medicine, Division of Gastroenterology and Hepatology, The University of Alabama at Birmingham, 1530 3rd Avenue, Birmingham, AL 35294, USA.
Gastrointest Endosc. 2004 Dec;60(6):1018-21. doi: 10.1016/s0016-5107(04)02218-7.