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[DOI] [PubMed] [Google Scholar] 48.Deckert J, et al

doi: 10.1136/gut.2005.065557

1991;302 doi: 10.1136/bmj.302.6785.1111

Elevated NAD+ promotes mitochondrial biogenesis and function, improving cellular energy metabolism through enhanced oxidative phosphorylation

"Systematic review and pragmatic clinical approach to oral and nasal vitamin B12 (cobalamin) treatment in patients with vitamin B12 deficiency related to gastrointestinal disorders"
