RT Journal Article SR Electronic T1 Web top 10 JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 285 OP 285 DO 10.1136/sti.79.4.285 VO 79 IS 4 YR 2003 UL http://sti.bmj.com/content/79/4/285.abstract AB