title: Reply to paper by Dr. Edgren on "progestational potency of oral contraceptives: a polemic".
mesh_terms: D003276:Contraceptives, Oral / Q000009:adverse effects*; D003280:Contraceptives, Oral, Synthetic / Q000008:administration & dosage / Q000009:adverse effects*; D004305:Dose-Response Relationship, Drug; D004717:Endometrium / Q000187:drug effects*; D005260:Female; D006801:Humans; D008598:Menstruation / Q000187:drug effects*
chemical_list: D003276:Contraceptives, Oral; D003280:Contraceptives, Oral, Synthetic