RT Journal Article SR Electronic T1 Medical Society for the Study of Venereal Diseases JF Genitourinary Medicine JO Genitourin Med FD BMJ Publishing Group Ltd SP 133 OP 133 DO 10.1136/sti.64.2.133 VO 64 IS 2 A1 M A Waugh YR 1988 UL http://sti.bmj.com/content/64/2/133.abstract AB