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Homocysteine induces congenital defects of the heart and neural tube: effect of folic acid proc. Rosenquist TH,Ratashak SA,Selhub J. Proceedings of the National Academy of Sciences of the United States of America . 1996
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Periconceptional multivitamin use and the occurrence of conotruncal heart defects: results from a population-based. Botto LD,Rhoury MJ,Mulinare J,et al. Case-control study pediatrics . 1996