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International Journal of Pediatric Otorhinolaryngology > 2011 > 75 > 12 > 1553-1557
Journal of Pediatric Surgery > 2010 > 45 > 9 > e1-e5
International Journal of Pediatric Otorhinolaryngology > 2009 > 73 > 12 > 1817-1820
Journal of Emergency Medicine > 2002 > 22 > 1 > 71-74