title: [When do men's bones become brittle. A cause can be found only in every second patient].
mesh_terms: D019386:Alendronate / Q000008:administration & dosage / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D006801:Humans; D006887:Hydroxycholecalciferols / Q000008:administration & dosage / Q000627:therapeutic use; D008297:Male; D010024:Osteoporosis / Q000150:complications / Q000188:drug therapy / Q000453:epidemiology* / Q000517:prevention & control; D015663:Osteoporosis, Postmenopausal / Q000188:drug therapy / Q000453:epidemiology; D012307:Risk Factors; D012737:Sex Factors; D016103:Spinal Fractures / Q000209:etiology*; D013997:Time Factors
chemical_list: D006887:Hydroxycholecalciferols; C008088:alfacalcidol; D019386:Alendronate