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2. Laryngotracheal damage after prolonged intubation in the newborn infant;Choffat,1976
3. Prolonged nasotracheal intubation in infants and children;Hatch;Lancet,1969
4. Subglottic stenosis in newborn intensive care unit graduates;Jones;Am. J. Dis. Child.,1981
5. Acquired and congenital subglottic stenosis in the infant;Parkin;Ann. Otol. Rhinol. Laryngol.,1976