Osteoporosis and its treatment.
D002118:Calcium / Q000627:therapeutic use; D004967:Estrogens / Q000627:therapeutic use; D005260:Female; D006801:Humans; D006882:Hydroxyapatites / Q000627:therapeutic use; D010024:Osteoporosis / Q000175:diagnosis / Q000188:drug therapy* / Q000209:etiology
D004967:Estrogens; D006882:Hydroxyapatites; D002118:Calcium