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PDF) Comparison of sublingual vs. intramuscular administration of vitamin B12 for the treatment of patients with vitamin B12 deficiency Vitamin B12 Injections vs. Supplements: Which Works Best? Vitamin B12: What You Need to Know: Central California Surgery: Bariatric Surgeons Efficacy of different routes of vitamin B12 supplementation for the treatment of patients with vitamin B12 deficiency: A systematic review and network meta analysis Irish Journal of Medical Science (1971 )
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