title: Vitamin D depletion and effective calcium absorption.
authors.forename: Robert P
authors.initials: RP
authors.lastname: Heaney
mesh_terms: D000042:Absorption / Q000187:drug effects; D000368:Aged; D001862:Bone Resorption; D002118:Calcium / Q000378:metabolism* / Q000494:pharmacology; D002986:Clinical Trials as Topic; D006801:Humans; D010281:Parathyroid Hormone / Q000378:metabolism; D014807:Vitamin D / Q000378:metabolism / Q000494:pharmacology; D014808:Vitamin D Deficiency / Q000378:metabolism*
chemical_list: D010281:Parathyroid Hormone; D014807:Vitamin D; D002118:Calcium