RT Journal Article SR Electronic T1 Response to personal viewpoint on revalidation JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 524 OP 524 DO 10.7861/clinmedicine.7-5-524 VO 7 IS 5 A1 Ian Fletcher YR 2007 UL http://www.rcpjournals.org/content/7/5/524.1.abstract AB