Heitman Steven J, Bourke Michael J
Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
Department of Gastroenterology and Hepatology, Westmead Hospital, Sydney, New South Wales, Australia; Westmead Clinical School, University of Sydney, Sydney, New South Wales, Australia.
Gastrointest Endosc. 2017 Jul;86(1):87-89. doi: 10.1016/j.gie.2017.03.022.