I did everything the doctors said, but for 20 years my symptoms only got worse - The Washington Post
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Deficiency of vitamin B12 and its relation with neurological disorders: a critical review | The Journal of Basic and Applied Zoology | Full Text
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Deficiency of vitamin B12 and its relation with neurological disorders: a critical review | The Journal of Basic and Applied Zoology | Full Text
![Deficiency of vitamin B12 and its relation with neurological disorders: a critical review | The Journal of Basic and Applied Zoology | Full Text Deficiency of vitamin B12 and its relation with neurological disorders: a critical review | The Journal of Basic and Applied Zoology | Full Text](https://media.springernature.com/lw685/springer-static/image/art%3A10.1186%2Fs41936-020-00148-0/MediaObjects/41936_2020_148_Fig4_HTML.png)