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 880 OP 880 DO 10.1136/jcp.2007.047290.corr1 VO 61 IS 7 YR 2008 UL http://jcp.bmj.com/content/61/7/880.abstract AB