TY - JOUR T1 - DISCUSSION JF - The British Journal of Venereal Diseases JO - Br J Vener Dis SP - 121 LP - 125 DO - 10.1136/sti.26.3.121 VL - 26 IS - 3 A2 - , Y1 - 1950/09/01 UR - http://sti.bmj.com/content/26/3/121.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -