Elias Georg, Toubia Nabil
Division of Gastroenterology, Department of Medicine, Roger William Medical Center, Boston University, School of Medicine, Providence, Rhode Island, USA.
Clin Gastroenterol Hepatol. 2010 Mar;8(3):A18, A18.e1. doi: 10.1016/j.cgh.2009.03.036. Epub 2009 Apr 9.