RT Journal Article SR Electronic T1 Invited Service Reviews JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 376 OP 378 DO 10.7861/clinmedicine.10-4-376 VO 10 IS 4 A1 John Scarpello YR 2010 UL http://www.rcpjournals.org/content/10/4/376.abstract