RT Journal Article SR Electronic T1 Medical Microbiology JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 1319 OP 1319 DO 10.1136/jcp.37.11.1319-c VO 37 IS 11 A1 JG Collee YR 1984 UL http://jcp.bmj.com/content/37/11/1319.3.abstract AB