RT Journal Article SR Electronic T1 Serum creatine kinase isoenzyme levels in patients with cerebral tumours. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 1315 OP 1316 DO 10.1136/jcp.37.11.1315 VO 37 IS 11 A1 A S David YR 1984 UL http://jcp.bmj.com/content/37/11/1315.abstract AB