No abstract available
MeSH terms
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Child, Preschool
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Female
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Humans
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Intrinsic Factor / deficiency
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Intrinsic Factor / genetics*
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Mutation*
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Precursor Cell Lymphoblastic Leukemia-Lymphoma / complications
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Precursor Cell Lymphoblastic Leukemia-Lymphoma / genetics*
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Vitamin B 12 Deficiency / complications
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Vitamin B 12 Deficiency / genetics*