RT Journal Article SR Electronic T1 High on drugs: lessons from opiates in pancreatitis JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 600 OP 602 DO 10.1136/gutjnl-2017-314506 VO 67 IS 4 A1 Vijay P Singh YR 2018 UL http://gut.bmj.com/content/67/4/600.2.abstract AB