title: Perennial non-allergic rhinitis (NAR) is a chronic nonpurulent disease.
authors.forename: H
authors.initials: H
authors.lastname: Klementsson
mesh_terms: D000328:Adult; D002908:Chronic Disease; D004964:Estriol / Q000627:therapeutic use; D005260:Female; D006801:Humans; D008875:Middle Aged; D012220:Rhinitis / Q000175:diagnosis / Q000188:drug therapy / Q000473:pathology
chemical_list: D004964:Estriol