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Cheng TL, Szilagyi PG; Association of Medical School Pediatric Department Chairs, Inc.Cheng TL, et al.J Pediatr. 2007 May;150(5):451-2, 452.e1. doi: 10.1016/j.jpeds.2007.01.014.J Pediatr. 2007.PMID: 17452210No abstract available.