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 121 OP 125 DO 10.1136/sti.26.3.121 VO 26 IS 3 YR 1950 UL http://sti.bmj.com/content/26/3/121.abstract AB