Respiratory problems among Swedish farmers, correlation between symptoms and environment.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000391:Air Microbiology; D000917:Antibody Formation; D005203:Farmer's Lung / Q000150:complications* / Q000209:etiology / Q000276:immunology; D005334:Fever / Q000209:etiology; D006801:Humans; D008875:Middle Aged; D013172:Spores, Fungal / Q000302:isolation & purification