Introduction--thirty years of the pill.
Roland
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D003276:Contraceptives, Oral / Q000737:chemistry / Q000266:history*; D045166:Estradiol Congeners / Q000737:chemistry / Q000627:therapeutic use; D005260:Female; D049673:History, 20th Century; D006801:Humans; D045167:Progesterone Congeners / Q000737:chemistry / Q000627:therapeutic use
D003276:Contraceptives, Oral; D045166:Estradiol Congeners; D045167:Progesterone Congeners