RT Journal Article SR Electronic T1 Correction JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 600 OP 600 DO 10.1136/jcp.37.5.600-c VO 37 IS 5 YR 1984 UL http://jcp.bmj.com/content/37/5/600.3.abstract AB