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Kim SY, England L, Dietz PM, Morrow B, Perham-Hester KA.Kim SY, et al. Among authors: england l.Matern Child Health J. 2009 Sep;13(5):652-9. doi: 10.1007/s10995-008-0402-9. Epub 2008 Aug 19.Matern Child Health J. 2009.PMID: 18712464