DOI:
10.1055/s-00000020
Geburtshilfe und Frauenheilkunde
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References
Adams MJ, Khoury MJ, Scanlon KS, Stevenson RE, Knight GJ, Haddow JE, Sylvester GC, Cheek JE, Henry JP, Stabler SP. et al.
Elevated midtrimester serum methylmalonic acid levels as a risk factor for neural tube defects.
Teratology 1995; 51: 311-317
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