RT Journal Article SR Electronic T1 Early diagnosis of myocardial infarction: why measure cardiac enzymes? JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 2 OP 4 DO 10.1136/jcp.51.1.2 VO 51 IS 1 A1 P O Collinson YR 1998 UL http://jcp.bmj.com/content/51/1/2.abstract AB