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 107 OP 107 DO 10.1136/jcp.37.1.107 VO 37 IS 1 YR 1984 UL http://jcp.bmj.com/content/37/1/107.abstract AB