title: Future methods of fertility regulation.
mesh_terms: D000818:Animals; D001673:Biodegradation, Environmental; D055598:Chemical Phenomena; D002621:Chemistry; D003267:Contraception / Q000379:methods / Q000639:trends*; D003280:Contraceptives, Oral, Synthetic; D003365:Costs and Cost Analysis; D004343:Drug Implants; D004958:Estradiol / Q000097:blood; D005260:Female; D005544:Forecasting; D006801:Humans; D008186:Luteolytic Agents; D009635:Norandrostanes; D009640:Norethindrone / Q000097:blood; D011247:Pregnancy; D011374:Progesterone / Q000097:blood; D012106:Research
chemical_list: D003280:Contraceptives, Oral, Synthetic; D004343:Drug Implants; D008186:Luteolytic Agents; D009635:Norandrostanes; D011374:Progesterone; D004958:Estradiol; D009640:Norethindrone