No abstract available
MeSH terms
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Aged
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Follow-Up Studies
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Humans
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Magnetic Resonance Imaging
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Male
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Neurodegenerative Diseases / complications*
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Neurodegenerative Diseases / drug therapy
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Olfaction Disorders / complications*
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Olfaction Disorders / drug therapy
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Spinal Cord / pathology*
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Vitamin B 12 / therapeutic use
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Vitamin B Complex / therapeutic use
Substances
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Vitamin B Complex
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Vitamin B 12