RT Journal Article SR Electronic T1 Providing safe, efficient and affordable sedation in endoscopy JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP gutjnl-2018-316254 DO 10.1136/gutjnl-2018-316254 A1 Barbara Braden A1 Alissa Walsh YR 2018 UL http://gut.bmj.com/content/early/2018/03/09/gutjnl-2018-316254.abstract AB