[Correlative studies of the contents of chemical elements in drinking water and cereals consumed by 50 commune members and the mortality of esophageal carcinoma].
D000704:Analysis of Variance; D002523:Edible Grain / Q000032:analysis*; D004938:Esophageal Neoplasms / Q000401:mortality*; D005504:Food Analysis; D006801:Humans; D008982:Molybdenum / Q000032:analysis; D009566:Nitrates / Q000032:analysis; D014881:Water Supply / Q000032:analysis*
D009566:Nitrates; D008982:Molybdenum