PT - JOURNAL ARTICLE ED - , TI - Abstracts AID - 10.1136/sti.45.1.77 DP - 1969 Mar 01 TA - The British Journal of Venereal Diseases PG - 77--86 VI - 45 IP - 1 4099 - http://sti.bmj.com/content/45/1/77.short 4100 - http://sti.bmj.com/content/45/1/77.full SO - Br J Vener Dis1969 Mar 01; 45