title: Calcium balance and osteoporosis.
mesh_terms: D002118:Calcium / Q000378:metabolism*; D002127:Calcium Isotopes; D002136:Calcium, Dietary; D006801:Humans; D010024:Osteoporosis / Q000175:diagnosis*
chemical_list: D002127:Calcium Isotopes; D002136:Calcium, Dietary; D002118:Calcium