title: Establish reason why purulent rhinitis is persistent first.
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Robb
mesh_terms: D000328:Adult; D002648:Child; D002908:Chronic Disease; D006801:Humans; D012220:Rhinitis / Q000209:etiology* / Q000628:therapy; D013492:Suppuration / Q000209:etiology / Q000628:therapy