RT Journal Article SR Electronic T1 Investigation of symptom free patients after myocardial infarction. JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 531 OP 534 DO 10.1136/hrt.55.6.531 VO 55 IS 6 A1 C E Handler YR 1986 UL http://heart.bmj.com/content/55/6/531.abstract AB