Letter: Softened water.
D000328:Adult; D002318:Cardiovascular Diseases / Q000453:epidemiology*; D002561:Cerebrovascular Disorders / Q000453:epidemiology; D006801:Humans; D009203:Myocardial Infarction / Q000453:epidemiology; D014481:United States; D014880:Water Softening; D014881:Water Supply