RT Journal Article SR Electronic T1 MRCP(UK) April 2007 JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 409 OP 412 DO 10.7861/clinmedicine.7-4-409 VO 7 IS 4 YR 2007 UL http://www.rcpjournals.org/content/7/4/409.abstract AB