Department of Internal Medicine, Division of Gastroenterology, Hepatology, and Nutrition, Brody School of Medicine at East Carolina University, Suite 338, Mail Stop 734, Greenville, NC, USA. dr.mohamed.magdy@hotmail.com. Department of Internal Medicine, Division of Gastroenterology, Hepatology, and Nutrition, Brody School of Medicine at East Carolina University, Suite 338, Mail Stop 734, Greenville, NC, USA.