RT Journal Article SR Electronic T1 Knowledge-based assessments: maintaining rigour in standard setting processes JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 200 OP 201 DO 10.7861/clinmedicine.7-2-200 VO 7 IS 2 A1 Olayinka A Ogundipe YR 2007 UL http://www.rcpjournals.org/content/7/2/200.abstract AB