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. 2024 Oct 1;63(8):3269–3279. doi: 10.1007/s00394-024-03505-9

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© The Author(s) 2024

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Fig. 2 — Number of vitamin B₁₂ deficient individuals, pre- and post-intervention in each group, by different biomarkers. Abbreviations: HoloTC holotranscobalamin, Hcy homocysteine, MMA methylmalonic acid, 4cB12 score four combined index of vitamin B₁₂ score