title: Cytological monitoring of nickel sinter plant workers.
mesh_terms: D000328:Adult; D002294:Carcinoma, Squamous Cell / Q000139:chemically induced / Q000453:epidemiology; D006801:Humans; D008175:Lung Neoplasms / Q000139:chemically induced* / Q000453:epidemiology; D008297:Male; D008403:Mass Screening; D008669:Metallurgy; D008875:Middle Aged; D009532:Nickel / Q000633:toxicity*; D009784:Occupational Diseases / Q000139:chemically induced* / Q000453:epidemiology; D009864:Ontario; D012907:Smoking; D013183:Sputum / Q000166:cytology*
chemical_list: D009532:Nickel