title: Trends in steroid contraceptive research.
authors.affiliation: National Research Institute for Family Planning, Beijing, China.
authors.forename: B
authors.initials: B
authors.lastname: Xiao
mesh_terms: D003267:Contraception / Q000639:trends*; D003280:Contraceptives, Oral, Synthetic; D016503:Drug Delivery Systems; D005260:Female; D006801:Humans; D007436:Intrauterine Devices, Medicated; D016912:Levonorgestrel; D015735:Mifepristone; D009635:Norandrostanes
chemical_list: D003280:Contraceptives, Oral, Synthetic; D009635:Norandrostanes; D015735:Mifepristone; D016912:Levonorgestrel; C010855:anordrin