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