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Epidemiology of twinning in the National Birth Defects Prevention Study, 1997–2007
BACKGROUND: Our objective was to evaluate associations between twinning and maternal demographic factors and periconceptional exposures among infants with and without orofacial clefts. METHODS: We used data from the National Birth Defects Prevention Study; 228 twins and 8,242 singletons without birt...
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| Veröffentlicht in: | Birth Defects Res A Clin Mol Teratol |
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| Hauptverfasser: | , , , , , |
| Format: | Artigo |
| Sprache: | Inglês |
| Veröffentlicht: |
2014
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| Schlagworte: | |
| Online Zugang: | https://ncbi.nlm.nih.gov/pmc/articles/PMC4382674/ https://ncbi.nlm.nih.gov/pubmed/25359509 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1002/bdra.23325 |
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