title: Relationship between respiratory symptoms and bronchial hyperreactivity in pig farmers.
authors.affiliation: Department of Respiratory Diseases, University Hospital of Aarhus, Denmark.
authors.forename: M
authors.initials: M
authors.lastname: Iversen
authors.forename: B
authors.initials: B
authors.lastname: Pedersen
authors.forename: R
authors.initials: R
authors.lastname: Dahl
mesh_terms: D000328:Adult; D000367:Age Factors; D000382:Agricultural Workers' Diseases / Q000209:etiology*; D000822:Animal Husbandry; D000818:Animals; D003718:Denmark; D006801:Humans; D012140:Respiratory Tract Diseases / Q000209:etiology*; D012907:Smoking / Q000009:adverse effects; D013552:Swine