RT Journal Article SR Electronic T1 Sexually transmitted diseases. JF The British Journal of Venereal Diseases JO Br J Vener Dis FD BMJ Publishing Group Ltd SP 68 OP 71 DO 10.1136/sti.53.1.68 VO 53 IS 1 YR 1977 UL http://sti.bmj.com/content/53/1/68.abstract AB