RT Journal Article SR Electronic T1 The nation's doctor: the role of the Chief Medical Officer 1855–1998 JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 502 OP 504 DO 10.7861/clinmedicine.6-5-502 VO 6 IS 5 A1 Richard Himsworth YR 2006 UL http://www.rcpjournals.org/content/6/5/502.abstract AB