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doi:10.1016/j.ejmg.2019.103713
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doi:10.1016/j.jand.2016.09.025
[2] However, elevated MMA is not conclusive, as it is seen in people with B 12 deficiency, but also in elderly people who have renal insufficiency, [28] and elevated homocysteine is not conclusive, as it is also seen in people with folate deficiency
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