title: [The efficacy of postcoital oral levonorgestrel administration in the peri-ovulatory phase of menstrual cycle].
authors.forename: Y H
authors.initials: YH
authors.lastname: Zhu
mesh_terms: D000367:Age Factors; D001695:Biology; D003267:Contraception; D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003281:Contraceptives, Postcoital; D004194:Disease; D004467:Economics; D004703:Endocrine System; D005193:Family Planning Services; D006728:Hormones; D016912:Levonorgestrel; D008599:Menstruation Disturbances; D010827:Physiology; D011153:Population; D011154:Population Characteristics; D012102:Reproductive Control Agents; D012106:Research; D013672:Technology
chemical_list: D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003281:Contraceptives, Postcoital; D006728:Hormones; D012102:Reproductive Control Agents; D016912:Levonorgestrel
keywords: Age Factors; Biology; Clinical Research; Contraception; Contraceptive Agents, Female--side effects; Contraceptive Agents, Progestin--side effects; Contraceptive Agents--side effects; Diseases; Economic Factors; Endocrine System; Family Planning; Fertility Control, Postcoital--side effects; Hormones; Levonorgestrel--side effects; Menstruation Disorders; Physiology; Population; Population Characteristics; Reproductive Control Agents; Research And Development; Research Methodology; Technology