TY - JOUR T1 - Concepts of Medicine JF - The British Journal of Venereal Diseases JO - Br J Vener Dis SP - 229 LP - 229 DO - 10.1136/sti.37.3.229-b VL - 37 IS - 3 AU - S.M.L. Y1 - 1961/09/01 UR - http://sti.bmj.com/content/37/3/229.3.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -