Experience with Atrovent in coal miners.
D000328:Adult; D000336:Aerosols; D001286:Atropine Derivatives / Q000627:therapeutic use*; D001991:Bronchitis / Q000188:drug therapy*; D001993:Bronchodilator Agents; D002986:Clinical Trials as Topic; D003032:Coal Mining; D004341:Drug Evaluation; D005541:Forced Expiratory Volume; D006801:Humans; D009241:Ipratropium / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000188:drug therapy*; D010919:Placebos
D000336:Aerosols; D001286:Atropine Derivatives; D001993:Bronchodilator Agents; D010919:Placebos; D009241:Ipratropium