title: URI or preoperative obstruction?
authors.forename: I
authors.initials: I
authors.lastname: McKenzie
mesh_terms: D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007431:Intraoperative Complications / Q000145:classification*; D012135:Respiratory Sounds / Q000145:classification; D012141:Respiratory Tract Infections / Q000145:classification*