Correlation of cancer death rates with altitude and with the quality of water supply of the 100 largest cities in the United States.
D000367:Age Factors; D000531:Altitude; D004553:Electric Conductivity; D005260:Female; D006801:Humans; D007477:Ions / Q000032:analysis; D008297:Male; D009369:Neoplasms / Q000401:mortality*; D014481:United States; D014881:Water Supply / Q000032:analysis
D007477:Ions