Hard data for hard water.
Burton
Adrian
A
D017610:Calcium Compounds / Q000032:analysis*; D002318:Cardiovascular Diseases / Q000517:prevention & control*; D005618:Fresh Water / Q000032:analysis*; D006801:Humans; D017616:Magnesium Compounds / Q000032:analysis*; D014881:Water Supply / Q000032:analysis*
D017610:Calcium Compounds; D017616:Magnesium Compounds