Occupational disease surveillance: occupational asthma.
D001249:Asthma / Q000453:epidemiology*; D003120:Colorado / Q000453:epidemiology; D006801:Humans; D008824:Michigan / Q000453:epidemiology; D009515:New Jersey / Q000453:epidemiology; D009784:Occupational Diseases / Q000453:epidemiology*; D009786:Occupational Health Services; D011159:Population Surveillance; D014481:United States / Q000453:epidemiology