Is a monthly period still necessary? A new pill questions a basic of female biology.
Sobel
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D003278:Contraceptives, Oral, Hormonal / Q000008:administration & dosage*; D004334:Drug Administration Schedule; D005260:Female; D006801:Humans; D008597:Menstrual Cycle / Q000187:drug effects
D003278:Contraceptives, Oral, Hormonal