Affiliation: | 1.Jordan Medical Education Center, Perelman School of Medicine, University of Pennsylvania, Building 421, Room 5-1009; 3400 Civic Center Boulevard, 6th Floor, Philadelphia, PA, 19104, USA ;2.Department of Gastroenterology, Veterans Affairs Hospital, Philadelphia VA Medical Center, Room 430; 3900 Woodland Ave, Philadelphia, PA, 19104, USA ;3.Department of Internal Medicine, Mercy Catholic Medical Center, 1500 Lansdowne Ave, Darby, PA, 19023, USA ; |