Amateau S K, Wolfgang C L, Khashab M A
Department of Internal Medicine, Division of Gastroenterology and Hepatology, The Johns Hopkins Hospital, Baltimore, Maryland 21205, USA.
Endoscopy. 2012;44 Suppl 2 UCTN:E17-8. doi: 10.1055/s-0031-1291500. Epub 2012 Mar 6.