RT Journal Article SR Electronic T1 Acute gastroenterology JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 262 OP 266 DO 10.7861/clinmedicine.7-3-262 VO 7 IS 3 A1 Vipul Jairath A1 Louise Langmead YR 2007 UL http://www.rcpjournals.org/content/7/3/262.abstract AB