No abstract available
MeSH terms
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Administration, Oral
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Aged
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Biological Availability
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Biomarkers / blood
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England
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Female
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Homocysteine / blood
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Humans
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Infusions, Intravenous
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Methylmalonic Acid / blood
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Neural Tube Defects / etiology
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Neural Tube Defects / prevention & control
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Pregnancy
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Pregnancy Complications / prevention & control
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Sweden
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Vitamin B 12 / administration & dosage*
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Vitamin B 12 / pharmacokinetics*
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Vitamin B 12 Deficiency / blood
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Vitamin B 12 Deficiency / diagnosis
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Vitamin B 12 Deficiency / drug therapy*
Substances
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Biomarkers
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Homocysteine
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Methylmalonic Acid
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Vitamin B 12