RT Journal Article SR Electronic T1 Swansong JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 3 OP 3 DO 10.7861/clinmedicine.17-1-3 VO 17 IS 1 A1 Humphrey Hodgson YR 2017 UL http://www.rcpjournals.org/content/17/1/3.abstract