title: [Clinical course and etiology of recurrent respiratory tract infections in children].
mesh_terms: D001424:Bacterial Infections / Q000209:etiology*; D002648:Child; D004198:Disease Susceptibility; D006801:Humans; D007113:Immunity, Innate; D007153:Immunologic Deficiency Syndromes / Q000150:complications; D009748:Nutrition Disorders / Q000150:complications; D012008:Recurrence; D012141:Respiratory Tract Infections / Q000209:etiology*; D014777:Virus Diseases / Q000209:etiology*
vernacular_title: Klinika i etiopatogeneza nawracajacych zakazeń dróg oddechowych u dzieci.