Krishna Somashekar G, McElreath David P, Rego Rayburn F
Department of Gastroenterology and Hepatology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA.
Clin Gastroenterol Hepatol. 2009 Dec;7(12):e75-6. doi: 10.1016/j.cgh.2009.08.005. Epub 2009 Aug 13.