Kumbhari Vivek, Tieu Alan H, Khashab Mouen A
Department of Medicine and Division of Gastroenterology and Hepatology, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA.
Gastrointest Endosc. 2015 Apr;81(4):1015-6. doi: 10.1016/j.gie.2014.10.019. Epub 2014 Dec 5.