Water hardness and cardiovascular disease.
D002170:Canada; D002318:Cardiovascular Diseases / Q000209:etiology* / Q000401:mortality; D004326:Drinking; D004739:England; D006244:Hardness; D006801:Humans; D008274:Magnesium / Q000008:administration & dosage; D014481:United States; D014852:Wales; D014867:Water
D014867:Water; D008274:Magnesium