Alayo Erick, Attar Bashar, Go Benjamin
Division of Gastroenterology, John H. Stroger Hospital of Cook County and Rush Medical College, Chicago, Illinois, USA.
Clin Gastroenterol Hepatol. 2010 Feb;8(2):e13-4. doi: 10.1016/j.cgh.2009.08.029. Epub 2009 Sep 3.