RT Journal Article SR Electronic T1 A method for the collection of saliva JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 204 OP 204 DO 10.1136/jcp.14.2.204 VO 14 IS 2 A1 P. J. Cousins YR 1961 UL http://jcp.bmj.com/content/14/2/204.abstract AB