RT Journal Article SR Electronic T1 Reply JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 390 OP 390 DO 10.1136/sti.77.5.390-a VO 77 IS 5 A1 Morris, Marianne YR 2001 UL http://sti.bmj.com/content/77/5/390.2.abstract AB