title: Comparative study of respiratory changes in nitric acid plant workers.
mesh_terms: D000328:Adult; D000395:Air Pollutants, Occupational / Q000009:adverse effects*; D002617:Chemical Industry; D006801:Humans; D007194:India; D008173:Lung Diseases, Obstructive / Q000139:chemically induced*; D008297:Male; D009566:Nitrates / Q000009:adverse effects*; D017942:Nitric Acid; D012129:Respiratory Function Tests
chemical_list: D000395:Air Pollutants, Occupational; D009566:Nitrates; D017942:Nitric Acid