RT Journal Article SR Electronic T1 Cancer Medicine JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 709 OP 710 DO 10.1136/jcp.50.8.709-d VO 50 IS 8 A1 R Penson YR 1997 UL http://jcp.bmj.com/content/50/8/709.4.abstract AB