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Nicotinamide N-methyltransferase as a potential therapeutic target in neurodegenerative diseases
It is uncommon for most people to be B12 deficient, but the elderly, vegetarians and those infected with HIV are most at risk
D51.1 - Vitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with intrinsic factor deficiency: Applied when macrocytic anemia results from selective vitamin B12 malabsorption with intrinsic factor deficiency, affecting vitamin B12 absorption
