Saxena Payal, Azola Alba, Kumbhari Vivek, Kalloo Anthony N, Khashab Mouen A
Department of Medicine and Division of Gastroenterology and Hepatology, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA.
Gastrointest Endosc. 2015 Feb;81(2):467-8. doi: 10.1016/j.gie.2014.04.055. Epub 2014 Jun 20.