RT Journal Article SR Electronic T1 Accuracy of ECG interpretation in primary care was limited for detecting atrial fibrillation JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 58 OP 58 DO 10.1136/ebm.13.2.58 VO 13 IS 2 YR 2008 UL http://ebm.bmj.com/content/13/2/58.abstract AB