Sudden death and ischemic heart disease. Correlation with hardness of local water supply.
D000328:Adult; D000368:Aged; D001145:Arrhythmias, Cardiac / Q000209:etiology / Q000401:mortality; D002118:Calcium / Q000032:analysis; D003327:Coronary Disease / Q000401:mortality*; D003334:Coroners and Medical Examiners; D003644:Death Certificates; D003645:Death, Sudden; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications / Q000453:epidemiology; D009864:Ontario; D014867:Water / Q000032:analysis*; D014881:Water Supply
D014867:Water; D002118:Calcium