RT Journal Article SR Electronic T1 Methods in Hematology JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 940 OP 940 DO 10.1136/jcp.34.8.940-b VO 34 IS 8 A1 Cavill, I YR 1981 UL http://jcp.bmj.com/content/34/8/940.2.abstract AB