title: [A clinical study on the contraceptive effect of vaginal application of levonorgestrel].
authors.forename: C H
authors.initials: CH
authors.lastname: He
mesh_terms: D001208:Asia; D001695:Biology; D002681:China; D003267:Contraception; D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003906:Developing Countries; D005193:Family Planning Services; D005202:Asia, Eastern; D005835:Genitalia; D005836:Genitalia, Female; D016912:Levonorgestrel; D010827:Physiology; D012106:Research; D014566:Urogenital System; D014621:Vagina
chemical_list: D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D016912:Levonorgestrel
keywords: Asia; Biology; China; Clinical Research; Contraception; Contraception Research; Contraceptive Agents; Contraceptive Agents, Female; Contraceptive Agents, Progestin; Contraceptive Effectiveness; Developing Countries; Eastern Asia; Family Planning; Genitalia; Genitalia, Female; Levonorgestrel; Physiology; Research Methodology; Urogenital System; Vagina