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Comment
. 2020 Sep;223(3):466.
doi: 10.1016/j.ajog.2020.04.011. Epub 2020 Apr 18.

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Sarah C Tinker et al. Am J Obstet Gynecol. 2020 Sep.
No abstract available

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Conflict of interest statement

The authors report no conflict of interest.

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References

    1. Reefhuis J, Gilboa SM, Anderka M, et al. The National Birth Defects Prevention Study: a review of the methods. Birth Defects Res A Clin Mol Teratol 2015;103:656–69. - PMC - PubMed
    1. Cogswell ME, Bitsko RH, Anderka M, et al. Control selection and participation in an ongoing, population-based, case-control study of birth defects: the National Birth Defects Prevention Study. Am J Epidemiol 2009;170:975–85. - PubMed
    1. Mai CT, Isenburg JL, Canfield MA, et al. National population-based estimates for major birth defects, 2010—2014. Birth Defects Res 2019;111:1420–35. - PMC - PubMed