RT Journal Article SR Electronic T1 Bejel JF The British Journal of Venereal Diseases JO Br J Vener Dis FD BMJ Publishing Group Ltd SP 174 OP 176 DO 10.1136/sti.27.4.174 VO 27 IS 4 A1 Hudson, E. H. YR 1951 UL http://sti.bmj.com/content/27/4/174.abstract AB