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 208 OP 212 DO 10.1136/sti.60.3.208 VO 60 IS 3 YR 1984 UL http://sti.bmj.com/content/60/3/208.abstract AB