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 92 OP 100 DO 10.1136/sti.23.2.92 VO 23 IS 2 YR 1947 UL http://sti.bmj.com/content/23/2/92.abstract AB