RT Journal Article SR Electronic T1 Commentary JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 157 OP 158 DO 10.1136/sti.2005.018028 VO 82 IS 2 A1 J Green YR 2006 UL http://sti.bmj.com/content/82/2/157.abstract AB