Epidemiologic approach to arsenic pollution.
D001151:Arsenic / Q000032:analysis; D004781:Environmental Exposure; D004787:Environmental Pollution / Q000032:analysis; D004812:Epidemiologic Methods; D006801:Humans; D008175:Lung Neoplasms / Q000401:mortality; D008396:Maryland; D012306:Risk
D001151:Arsenic