title: Urinary excretion of calcium, magnesium, sodium, and potassium in hard and soft water areas.
mesh_terms: D000328:Adult; D000368:Aged; D002118:Calcium / Q000652:urine*; D002136:Calcium, Dietary; D002318:Cardiovascular Diseases / Q000209:etiology*; D002940:Circadian Rhythm; D003404:Creatinine / Q000652:urine; D004739:England; D006801:Humans; D008131:London; D008274:Magnesium / Q000652:urine*; D008297:Male; D008875:Middle Aged; D011188:Potassium / Q000652:urine*; D012606:Scotland; D012964:Sodium / Q000652:urine*; D014675:Vegetables / Q000032:analysis; D014880:Water Softening; D014881:Water Supply
chemical_list: D002136:Calcium, Dietary; D012964:Sodium; D003404:Creatinine; D008274:Magnesium; D011188:Potassium; D002118:Calcium