RT Journal Article SR Electronic T1 Specialty certificate examination in gastroenterology JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 433 OP 434 DO 10.7861/clinmedicine.10-5-433 VO 10 IS 5 A1 PR Mills YR 2010 UL http://www.rcpjournals.org/content/10/5/433.abstract