RT Journal Article SR Electronic T1 Severe obesity and gut microbiota: does bariatric surgery really reset the system? JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 5 OP 6 DO 10.1136/gutjnl-2018-316815 VO 68 IS 1 A1 Patrice D Cani YR 2019 UL http://gut.bmj.com/content/68/1/5.abstract AB