RT Journal Article SR Electronic T1 Proton pump inhibitor therapy after Helicobacter pylori eradication may increase the risk of gastric cancer JF BMJ Evidence-Based Medicine JO BMJ EBM FD BMJ Publishing Group Ltd SP 111 OP 112 DO 10.1136/bmjebm-2018-110935 VO 23 IS 3 A1 Mimi Chang Tan A1 David Y Graham YR 2018 UL http://ebm.bmj.com/content/23/3/111.abstract AB