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Vitamin B12 Deficiency and Dosage

daily B12 of 4 to 7 micrograms may be sufficient      web

webhttps://pubmed.ncbi.nlm.nih.gov/20071646/
authorMustafa Vakur Bor, Kristina M von Castel-Roberts
publicationAm J Clin Nutr
date2010-03-01

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