RT Journal Article SR Electronic T1 Withdrawn JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 1037 OP 1037 DO 10.1136/jclinpath-2011-200046 VO 64 IS 11 YR 2011 UL http://jcp.bmj.com/content/64/11/1037.2.abstract AB