RT Journal Article SR Electronic T1 Peer led HIV prevention among homosexual men in Britain JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 158 OP 159 DO 10.1136/sti.78.3.158 VO 78 IS 3 A1 J Elford A1 G Hart A1 L Sherr A1 L Williamson A1 G Bolding YR 2002 UL http://sti.bmj.com/content/78/3/158.1.abstract AB