RT Journal Article SR Electronic T1 Genitourinary medicine and the Internet No 8. JF Genitourinary Medicine JO Genitourin Med FD BMJ Publishing Group Ltd SP 415 OP 417 DO 10.1136/sti.73.5.415 VO 73 IS 5 A1 R K Lau YR 1997 UL http://sti.bmj.com/content/73/5/415.abstract AB