RT Journal Article SR Electronic T1 Lesson of the month JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 107 OP 108 DO 10.7861/clinmedicine.8-1-107 VO 8 IS 1 A1 Isaac Chirwa A1 Mark Savage A1 Aisha Sarwar A1 Andrea Norris YR 2008 UL http://www.rcpjournals.org/content/8/1/107.abstract AB