DOI:
10.1055/s-00000020
Geburtshilfe und Frauenheilkunde
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References
Hellegers A, Okuda K, Nesbitt REI, Smith DW, Chow BF.
Vitamin B12 absorption in pregnancy and in the newborns.
Am J Clin Nutr 1957; 5: 327-333
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