RT Journal Article SR Electronic T1 Correction JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 400 OP 400 DO 10.1136/sextrans-2013-051020corr1 VO 90 IS 5 YR 2014 UL http://sti.bmj.com/content/90/5/400.abstract AB