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Razzaghi H, Tinker SC, Herring AH, Howards PP, Waller DK, Johnson CY; National Birth Defects Prevention Study.Razzaghi H, et al. Among authors: howards pp.Matern Child Health J. 2016 Jul;20(7):1497-505. doi: 10.1007/s10995-016-1948-6.Matern Child Health J. 2016.PMID: 27029540Free PMC article.