RT Journal Article SR Electronic T1 Cardiology JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 166 OP 169 DO 10.7861/clinmedicine.8-2-166 VO 8 IS 2 A1 Brian Pentecost YR 2008 UL http://www.rcpjournals.org/content/8/2/166.abstract AB