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It does not constitute an endorsement or recommendation of any specific treatment, product, or service, nor is it a substitute for professional advice
Many foods are fortified with artificial vitamin B12, such as non-dairy milks and cereals, but these are not always optimally absorbed, so vegans must still be proactive about making sure they are not becoming deficient
(Endocrinology) Outpatient visit with 19-year-old male, established patient, for supervised drug screen
The American Journal of Physiology
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