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Chem Res Toxicol 2003

In a randomized placebo-controlled double-blind study, injectable vitamin B12 as 1000 pg of cyanocobalamin (with a small amount of phospholipids) was given intramuscularly once daily for 2 weeks
combination of the two) (for a review, see[3,52,53])

[DOI] [PMC free article] [PubMed] [Google Scholar] 966
