Steroid contraceptives in the People's Republic of China.
D002681:China; D003276:Contraceptives, Oral; D004335:Drug and Narcotic Control; D005260:Female; D006801:Humans; D011155:Population Control; D011247:Pregnancy; D011453:Prostaglandins; D013246:Sterilization, Tubal; D013256:Steroids
D003276:Contraceptives, Oral; D011453:Prostaglandins; D013256:Steroids