CalcaneusBone DensityAbsorptiometry, PhotonOsteoporosisBone and BonesUltrasonographyBone Diseases, MetabolicFinger PhalangesOsteoporosis, PostmenopausalFemur NeckMineralsFractures, BoneFemurBone RemodelingLumbar VertebraeUltrasonicsRadiusCalcium, DietaryReproducibility of ResultsTibiaBone ResorptionHipHigh-Energy Shock WavesTransducersSpineCross-Sectional StudiesBone Density Conservation AgentsAnthropometryBone DevelopmentOsteocalcinImage Interpretation, Computer-AssistedUltrasonography, PrenatalAlendronatePhantoms, ImagingBody CompositionSensitivity and SpecificityRegression Analysis