RT Journal Article SR Electronic T1 Commentary JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 141 OP 141 DO 10.1136/sti.2005.019091 VO 82 IS 2 A1 Ison, C A YR 2006 UL http://sti.bmj.com/content/82/2/141.abstract AB