No abstract available
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Child
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Child, Preschool
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Humans
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Infant
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Infant, Newborn
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Injections, Intramuscular
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Leukemia / etiology*
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Precursor Cell Lymphoblastic Leukemia-Lymphoma / etiology
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Retrospective Studies
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Risk Factors
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Vitamin K / administration & dosage
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Vitamin K / adverse effects*