RT Journal Article SR Electronic T1 Dr Symth et al comment JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 892 OP 893 DO 10.1136/jcp.42.8.892-c VO 42 IS 8 YR 1989 UL http://jcp.bmj.com/content/42/8/892.3.abstract AB