title: Lung cancer in workers in a nickel refinery.
mesh_terms: D000328:Adult; D000368:Aged; D004781:Environmental Exposure; D006801:Humans; D008175:Lung Neoplasms / Q000139:chemically induced / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D009532:Nickel / Q000009:adverse effects*; D009664:Norway; D009784:Occupational Diseases / Q000139:chemically induced / Q000453:epidemiology*; D012189:Retrospective Studies; D012907:Smoking; D013997:Time Factors
chemical_list: D009532:Nickel