DOI: 10.1055/s-00000142

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Referenz

De-Regil LM, Fernandez-Gaxiola AC, Dowswell T et al.
Effects and safety of periconceptional folate supplementation for preventing birth defects.

Cochrane Database Syst Rev 2010; CD007950
DOI: 10.1002/14651858.CD007950.pub2.

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