RT Journal Article SR Electronic T1 A patient with biliary colic and intestinal obstruction JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 713 OP 713 DO 10.1136/gut.2010.227843 VO 61 IS 5 A1 Bas W van der Spek A1 Miguel A Cuesta A1 Maarten A Jacobs YR 2012 UL http://gut.bmj.com/content/61/5/713.abstract AB