Spermicides with N-9 focus of clinical trial.
D000569:Americas; D002986:Clinical Trials as Topic; D003267:Contraception; D003270:Contraceptive Agents; D019049:Developed Countries; D005193:Family Planning Services; D017137:Nonoxynol; D009656:North America; D012106:Research; D013089:Spermatocidal Agents; D014481:United States
D003270:Contraceptive Agents; D013089:Spermatocidal Agents; D017137:Nonoxynol
Americas; Clinical Research; Clinical Trials; Contraception; Contraception Research; Contraceptive Agents; Contraceptive Effectiveness; Contraceptive Methods; Developed Countries; Family Planning; Nonoxynol-9; North America; Northern America; Research Methodology; Spermicidal Contraceptive Agents; United States; Vaginal Spermicides