Giusti, A High prevalence of secondary hyperparathyroidism due to hypovitaminosis D in hospitalized elderly with and without hip fracture. [electronic resource] - Journal of endocrinological investigation Oct 2006 - 809-13 p. digital Publication Type: Comparative Study; Journal Article ISSN: 1720-8386 Standard No.: 10.1007/BF03347375 doi Subjects--Topical Terms: AgedAged, 80 and overAlbumins--analysisCalcium--bloodCase-Control StudiesFemaleHip Fractures--bloodHumansHyperparathyroidism, Secondary--bloodMaleOsteoporosis, Postmenopausal--bloodParathyroid Hormone--bloodPrevalenceResidence CharacteristicsVitamin D--analogs & derivativesVitamin D Deficiency--blood