RT Journal Article SR Electronic T1 Handbook of Genitourinary Medicine JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 61 OP 61 DO 10.1136/sti.76.1.61-a VO 76 IS 1 A1 Carne, Chris YR 2000 UL http://sti.bmj.com/content/76/1/61.2.abstract AB