RT Journal Article SR Electronic T1 Bruce P. Webster. JF The British Journal of Venereal Diseases JO Br J Vener Dis FD BMJ Publishing Group Ltd SP 210 OP 211 DO 10.1136/sti.52.3.210-a VO 52 IS 3 A1 Catherall, R D YR 1976 UL http://sti.bmj.com/content/52/3/210.2.abstract AB