Myer CM (July 1991). "Airway obstruction in Hurler's syndrome--radiographic features". International Journal of Pediatric Otorhinolaryngology. 22 (1): 91–6. doi:10.1016/0165-5876(91)90101-g. PMID1917344.
Myer CM (July 1991). "Airway obstruction in Hurler's syndrome--radiographic features". International Journal of Pediatric Otorhinolaryngology. 22 (1): 91–6. doi:10.1016/0165-5876(91)90101-g. PMID1917344.