Relations between hardness of water and death rates from certain chronic and degenerative diseases in the United States.
D001699:Biometry; D002908:Chronic Disease / Q000706:statistics & numerical data*; D006244:Hardness; D006801:Humans; D014481:United States; D014867:Water; D014881:Water Supply
D014867:Water
CHRONIC DISEASE/statistics; WATER SUPPLY