RT Journal Article SR Electronic T1 Abstracts JF The British Journal of Venereal Diseases JO Br J Vener Dis FD BMJ Publishing Group Ltd SP 207 OP 212 DO 10.1136/sti.39.3.207 VO 39 IS 3 YR 1963 UL http://sti.bmj.com/content/39/3/207.abstract AB