RT Journal Article SR Electronic T1 Sub-optimal H1N1 vaccine uptake by immunocompromised inflammatory bowel disease patients JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 301 OP 301 DO 10.7861/clinmedicine.11-3-301 VO 11 IS 3 A1 M Hanna A1 A Poullis YR 2011 UL http://www.rcpjournals.org/content/11/3/301.1.abstract