RT Journal Article SR Electronic T1 Virtual reality in GI endoscopy: intuitive zoom for improving diagnostics and training JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 957 OP 959 DO 10.1136/gutjnl-2018-317058 VO 68 IS 6 A1 Hann, Alexander A1 Walter, Benjamin M A1 Mehlhase, Niklas A1 Meining, Alexander YR 2019 UL http://gut.bmj.com/content/68/6/957.abstract AB