RT Journal Article SR Electronic T1 Nosocomial Infections JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 247 OP 247 DO 10.1136/jcp.35.2.247-c VO 35 IS 2 A1 Williams, JD YR 1982 UL http://jcp.bmj.com/content/35/2/247.3.abstract AB