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 285 OP 290 DO 10.1136/sti.54.4.285 VO 54 IS 4 YR 1978 UL http://sti.bmj.com/content/54/4/285.abstract AB