Hashash Jg, Chopra K, Behari J
Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, United States of America.
J Gastroenterol Hepatol. 2011 Aug;26(8):1341. doi: 10.1111/j.1440-1746.2011.06810.x.