RT Journal Article SR Electronic T1 Efficacy of granulocyte/monocyte apheresis for moderate to severe Crohn's disease JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 653 OP 653 DO 10.1136/gutjnl-2012-303660 VO 62 IS 4 A1 James A Eaden A1 Alexander Charles Ford YR 2013 UL http://gut.bmj.com/content/62/4/653.1.abstract AB