Sundaram Vinay, Al-Osaimi Abdullah M S, Lewis Jason J, Lisman Ton, Caldwell Stephen H
Department of Internal Medicine, Division of Gastroenterology and Hepatology, University of Virginia Health System, Charlottesville, Virginia 22908-0708, USA.
Dig Dis Sci. 2006 Jul;51(7):1203-5. doi: 10.1007/s10620-006-8033-8.