RT Journal Article SR Electronic T1 Correction JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 75 OP 75 DO 10.1136/sextrans-2013-051075corr1 VO 90 IS 1 YR 2014 UL http://sti.bmj.com/content/90/1/75.1.abstract AB