2Imahara SD,Hopper RA,Wang J,et al.Patterns and outcomes of pediatric facial fractures in the United States:a survey of the National Trauma Data Bank[J].J Am Coll Surg,2008,207(5):710-716.
3Down KE,Boot DA,Gorman DF.Maxillofacial and associated injuries in severely traumatized patients:implications of a regional survey[J].Int J Oral Maxillofac Surg,1995,24(6):409-412.