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 44 OP 48 DO 10.1136/sti.27.1.44 VO 27 IS 1 YR 1951 UL http://sti.bmj.com/content/27/1/44.abstract AB