Table 4 from Vitamin B12 deficiency. Recognizing subtle symptoms in older adults. | Semantic Scholar
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Table 2 from Diagnosis and Treatment of Vitamin B12 Deficiency. an Update from a Fatal Disease to a Biochemical Condition Causes of Vitamin B12 Deficiency | Semantic Scholar
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Persistent elevation of plasma vitamin B12 is strongly associated with solid cancer | Scientific Reports
Vitamin B12 Deficiency: Recognition and Management | AAFP
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Elevated plasma vitamin B12 levels and cancer prognosis: A population-based cohort study - ScienceDirect
Table 3 from Update on vitamin B12 deficiency. | Semantic Scholar
Article: Association of vitamin B12, methylmalonic acid, and functional parameters (full text) - February 2020 - NJM
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Vitamin B12 Deficiency: Recognition and Management | AAFP
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Frontiers | Biomarkers and Algorithms for the Diagnosis of Vitamin B12 Deficiency
