RT Journal Article SR Electronic T1 The BASHH MSM special interest group JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 538 OP 538 DO 10.1136/sextrans-2015-052019 VO 91 IS 8 A1 Dan Clutterbuck YR 2015 UL http://sti.bmj.com/content/91/8/538.abstract AB