title: Prevalence rates of chronic non-specific respiratory disease in fire fighters.
mesh_terms: D000328:Adult; D001900:Boston; D002908:Chronic Disease; D004781:Environmental Exposure; D005390:Fires; D006801:Humans; D008875:Middle Aged; D009784:Occupational Diseases / Q000453:epidemiology*; D012140:Respiratory Tract Diseases / Q000453:epidemiology*; D012906:Smoke; D012907:Smoking; D013147:Spirometry; D013997:Time Factors; D014797:Vital Capacity
chemical_list: D012906:Smoke