title: Clinical survey of pigeon breeders.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D000368:Aged; D000818:Animals; D002648:Child; D010856:Columbidae; D004781:Environmental Exposure; D005203:Farmer's Lung / Q000150:complications / Q000000981:diagnostic imaging / Q000276:immunology* / Q000503:physiopathology; D005260:Female; D006801:Humans; D005779:Immunodiffusion; D008297:Male; D008875:Middle Aged; D011234:Precipitins / Q000032:analysis; D011859:Radiography; D012129:Respiratory Function Tests; D012907:Smoking / Q000150:complications; D013997:Time Factors
chemical_list: D011234:Precipitins