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Serum homocysteine, vitamin B 12 and folic acid levels in different types of glaucoma – topic of research paper in Clinical medicine. Download scholarly article PDF and read for free on CyberLeninka
A vegan man whose arms went numb and who had trouble speaking had vitamin B12 levels so low they were 'undetectable'
A woman who could 'barely walk' after years of feeling extremely tired was diagnosed with vitamin B12 deficiency
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Elevated levels of vitamin B12 in chronic stable heart failure: a marker for subclinical liver damage and impaired prognosis - Koç University Institutional Repository - SKL Digital Collections
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