Alkhatib Amer A, Jalil Ala Abdel, Harrison M E
Cancer Treatment Centers of America, Division of Gastroenterology, Oklahoma State University, Tulsa, Oklahoma, USA.
McLeod Regional Medical Center, Department of Internal Medicine, Florence, South Carolina, USA.
Am J Gastroenterol. 2014 Mar;109(3):447-8. doi: 10.1038/ajg.2013.470.