RT Journal Article SR Electronic T1 A Standardized Modification of the Laughlen Test for Syphilis JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 162 OP 166 DO 10.1136/jcp.1.3.162 VO 1 IS 3 A1 Stevenson, John S. YR 1948 UL http://jcp.bmj.com/content/1/3/162.abstract AB