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Yildirim I, Shea KM, Little BA, Silverio AL, Pelton SI; Members of the Massachusetts Department of Public Health.Yildirim I, et al.Pediatrics. 2015 Mar;135(3):495-503. doi: 10.1542/peds.2014-2426. Epub 2015 Feb 2.Pediatrics. 2015.PMID: 25647674