RT Journal Article SR Electronic T1 Proton Pump Inhibitors JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 316 OP 316 DO 10.1136/gut.47.2.316 VO 47 IS 2 A1 M E PARSONS YR 2000 UL http://gut.bmj.com/content/47/2/316.abstract AB