No abstract available
MeSH terms
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Aged
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Aged, 80 and over
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Cohort Studies
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Female
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France / epidemiology
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Gastritis, Atrophic / complications
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Humans
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Injections, Intramuscular
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Malabsorption Syndromes / drug therapy
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Malabsorption Syndromes / epidemiology*
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Malabsorption Syndromes / etiology
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Male
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Prospective Studies
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Risk Factors
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Vitamin B 12 / administration & dosage
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Vitamin B 12 / blood
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Vitamin B 12 Deficiency / drug therapy
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Vitamin B 12 Deficiency / epidemiology*
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Vitamin B 12 Deficiency / etiology