RT Journal Article SR Electronic T1 Blood Coagulation and Haemostasis JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 1123 OP 1123 DO 10.1136/jcp.33.11.1123-b VO 33 IS 11 A1 JF Davidson YR 1980 UL http://jcp.bmj.com/content/33/11/1123.2.abstract AB