%0 Journal Article %T Alterations in Calcium, Vitamin D, and Parathyroid Hormone Physiology in Normal Men with Aging: Relationship to the Development of Senile Osteopenia %A ORWOLL, ERIC, S. %A MEIER, DIANE, E. %J Journal of Clinical Endocrinology and Metabolism %V 63 %N 6 %P 1262-1269 %@ 0021-972X %D 1986-12-01 %I Endocrine Society %~ DeepDyve