title: Diurnal variation in urinary excretion of calcium and strontium.
mesh_terms: D002118:Calcium / Q000378:metabolism*; D002940:Circadian Rhythm; D002986:Clinical Trials as Topic; D006801:Humans; D008875:Middle Aged; D013324:Strontium / Q000378:metabolism*; D014556:Urine
chemical_list: D002118:Calcium; D013324:Strontium