RT Journal Article SR Electronic T1 Lesson of the month JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 530 OP 531 DO 10.7861/clinmedicine.7-5-530 VO 7 IS 5 A1 FA Mir A1 MJ Brown A1 DS Appleton YR 2007 UL http://www.rcpjournals.org/content/7/5/530.abstract AB