RT Journal Article SR Electronic T1 COMMENTARY JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 254 OP 254 DO 10.1136/sti.2006.019612 VO 82 IS 3 A1 C H Mercer YR 2006 UL http://sti.bmj.com/content/82/3/254.abstract AB