Mahajan Anshu, Kumer Sean C, Wang Andrew Y
Division of Gastroenterology and Hepatology, Department of Medicine, University of Virginia, Charlottesville, Virginia, USA.
Clin Gastroenterol Hepatol. 2010 Jun;8(6):e63-4. doi: 10.1016/j.cgh.2009.12.019. Epub 2010 Jan 6.