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What caught my attention was the cardiovascular research
Oral versus intramuscular administration of vitamin B12 for vitamin B12 deficiency in primary care: A pragmatic, randomized, multicenter, non-inferiority clinical trial
What are the early signs of vitamin B12 deficiency related to hair
However, people with normal intestinal absorption and mild to moderate B12 deficiency symptoms can take oral B12 supplementation (B12 and folic acid pills)
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