Khashab M A, Singh V K, Lennon A M, Giday S A
Division of Gastroenterology and Hepatology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA.
Endoscopy. 2010;42 Suppl 2:E337. doi: 10.1055/s-0030-1255989. Epub 2010 Dec 17.