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Ramirez M, Fillmore E, Chen A, Peek-Asa C.Ramirez M, et al.Acad Pediatr. 2010 Sep-Oct;10(5):317-22. doi: 10.1016/j.acap.2010.06.003. Epub 2010 Aug 2.Acad Pediatr. 2010.PMID: 20674529