title: Hypovitaminosis D and secondary hyperparathyroidism in the elderly: risk factors for hip fracture or markers of frailty?
authors.forename: A
authors.initials: A
authors.lastname: Barone
authors.forename: A
authors.initials: A
authors.lastname: Giusti
authors.forename: G
authors.initials: G
authors.lastname: Pioli
mesh_terms: D000368:Aged; D015415:Biomarkers / Q000097:blood; D016330:Frail Elderly; D006620:Hip Fractures / Q000209:etiology*; D006801:Humans; D006980:Hyperthyroidism / Q000150:complications*; D010024:Osteoporosis / Q000150:complications; D012307:Risk Factors; D014808:Vitamin D Deficiency / Q000150:complications*
chemical_list: D015415:Biomarkers