RT Journal Article SR Electronic T1 CORRECTION JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 76 OP 76 DO 10.1136/sti.2006.017954.corr1 VO 83 IS 1 YR 2007 UL http://sti.bmj.com/content/83/1/76.4.abstract AB