RT Journal Article SR Electronic T1 A simple clinical score accurately identified patients who had a cardiac cause of syncope JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 91 OP 91 DO 10.1136/ebm.14.3.91 VO 14 IS 3 YR 2009 UL http://ebm.bmj.com/content/14/3/91.abstract AB