PT - JOURNAL ARTICLE ED - , TI - DISCUSSION AID - 10.1136/sti.20.1.16 DP - 1944 Mar 01 TA - The British Journal of Venereal Diseases PG - 16--18 VI - 20 IP - 1 4099 - http://sti.bmj.com/content/20/1/16.short 4100 - http://sti.bmj.com/content/20/1/16.full SO - Br J Vener Dis1944 Mar 01; 20