The effects of occupation on chronic respiratory disease.
D000293:Adolescent; D000328:Adult; D003032:Coal Mining; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000209:etiology*; D009790:Occupations; D011009:Pneumoconiosis / Q000453:epidemiology*; D012140:Respiratory Tract Diseases / Q000209:etiology*; D014903:West Virginia