PT - JOURNAL ARTICLE ED - , TI - Abstracts AID - 10.1136/sti.45.3.256 DP - 1969 Sep 01 TA - The British Journal of Venereal Diseases PG - 256--264 VI - 45 IP - 3 4099 - http://sti.bmj.com/content/45/3/256.short 4100 - http://sti.bmj.com/content/45/3/256.full SO - Br J Vener Dis1969 Sep 01; 45