title: Letter: Osteoporosis.
mesh_terms: D000368:Aged; D002986:Clinical Trials as Topic; D000242:Cyclic AMP / Q000652:urine; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008593:Menopause; D008656:Mestranol / Q000627:therapeutic use; D008875:Middle Aged; D010024:Osteoporosis / Q000188:drug therapy* / Q000209:etiology; D010919:Placebos
chemical_list: D010919:Placebos; D008656:Mestranol; D000242:Cyclic AMP