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Hill CM, Hogan AM, Onugha N, Harrison D, Cooper S, McGrigor VJ, Datta A, Kirkham FJ.Hill CM, et al. Among authors: hogan am.Pediatrics. 2006 Oct;118(4):e1100-8. doi: 10.1542/peds.2006-0092.Pediatrics. 2006.PMID: 17015501Free PMC article.
Hogan AM, Hill CM, Harrison D, Kirkham FJ.Hogan AM, et al.Pediatrics. 2008 Jul;122(1):75-82. doi: 10.1542/peds.2007-2540.Pediatrics. 2008.PMID: 18595989