The agricultural use of nitrate fertilisers (tons of N) in provinces of Chile with high- and low-risk populations  for gastric carcinoma.
D002677:Chile; D005308:Fertilizers / Q000009:adverse effects*; D006801:Humans; D008297:Male; D009566:Nitrates / Q000009:adverse effects*; D012306:Risk; D013274:Stomach Neoplasms / Q000139:chemically induced / Q000453:epidemiology* / Q000401:mortality
D005308:Fertilizers; D009566:Nitrates