Update on Vitamin B12 Deficiency - American Family Physician
Preventing vitamin B12 deficiency in South Asian women of childbearing age: a randomised controlled trial comparing an oral vitamin B12 supplement with B12 dietary advice | European Journal of Clinical Nutrition
Vitamin B12 Deficiency: Overview and More
Frontiers | Oral Vitamin B12 Replacement for the Treatment of Pernicious Anemia | Medicine