RT Journal Article SR Electronic T1 Pharmacological treatment of opioid-induced constipation: moving ahead to new targets JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 2264 OP 2265 DO 10.1136/gutjnl-2020-320602 VO 69 IS 12 A1 Fabio Lugoboni A1 Federico Vignoni A1 Stefano Tamburin A1 , YR 2020 UL http://gut.bmj.com/content/69/12/2264.abstract AB