RT Journal Article SR Electronic T1 Proton pump inhibitor use associated with changes in gut microbiota composition JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP gutjnl-2017-315306 DO 10.1136/gutjnl-2017-315306 A1 Kelly R Reveles A1 Caitlin N Ryan A1 Luisa Chan A1 Reese A Cosimi A1 Wanda L Haynes YR 2017 UL http://gut.bmj.com/content/early/2017/10/09/gutjnl-2017-315306.abstract AB