RT Journal Article SR Electronic T1 DISCUSSION JF The British Journal of Venereal Diseases JO Br J Vener Dis FD BMJ Publishing Group Ltd SP 78 OP 82 DO 10.1136/sti.34.2.78 VO 34 IS 2 YR 1958 UL http://sti.bmj.com/content/34/2/78.abstract AB