RT Journal Article SR Electronic T1 A comparison of viral transport media. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 500 DO 10.1136/jcp.31.5.500-a VO 31 IS 5 A1 R Cornall A1 G E Urquhart YR 1978 UL http://jcp.bmj.com/content/31/5/500.1.abstract AB