PT - JOURNAL ARTICLE ED - , TI - Clapham omnibus AID - 10.1136/sti.77.4.291 DP - 2001 Aug 01 TA - Sexually Transmitted Infections PG - 291--291 VI - 77 IP - 4 4099 - http://sti.bmj.com/content/77/4/291.short 4100 - http://sti.bmj.com/content/77/4/291.full SO - Sex Transm Infect2001 Aug 01; 77