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Grupp-Phelan J, Mahajan P, Foltin GL, Jacobs E, Tunik M, Sonnett M, Miller S, Dayan P; Pediatric Emergency Care Applied Research Network.Grupp-Phelan J, et al.Pediatr Emerg Care. 2009 Apr;25(4):217-20. doi: 10.1097/pec.0b013e31819e3523.Pediatr Emerg Care. 2009.PMID: 19382317