From the Centers for Disease Control and Prevention. Nonoxynol-9 spermicide contraception use--United States, 1999.
D003268:Contraception Behavior / Q000706:statistics & numerical data*; D006801:Humans; D017137:Nonoxynol; D013089:Spermatocidal Agents; D014481:United States / Q000453:epidemiology
D013089:Spermatocidal Agents; D017137:Nonoxynol