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2. Epidemiology of rhinitis;Settipane,2007
3. British Society for Allergy and Clinical Immunology. BSACI guidelines for the management of allergic and non-allergic rhinitis;Scadding,2008
4. Allergic rhinitis and impairment issues in schoolchildren;Blaiss,2004
5. Loss of work productivity due to illness and medical treatment;Cockburn,1999