An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Shaw GM, Carmichael SL, Yang W, Lammer EJ.Shaw GM, et al. Among authors: carmichael sl.Birth Defects Res A Clin Mol Teratol. 2010 Mar;88(3):144-51. doi: 10.1002/bdra.20648.Birth Defects Res A Clin Mol Teratol. 2010.PMID: 20063270Free PMC article.
Carmichael SL, Shaw GM, Neri E, Schaffer DM, Selvin S.Carmichael SL, et al.Matern Child Health J. 2002 Sep;6(3):151-7. doi: 10.1023/a:1019722011688.Matern Child Health J. 2002.PMID: 12236662