No abstract available
MeSH terms
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Bias
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Brain Ischemia / epidemiology*
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Case-Control Studies
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Causality
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Cerebrovascular Disorders / epidemiology*
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Comorbidity
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Data Interpretation, Statistical
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Epidemiologic Research Design
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Humans
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Intracranial Arteriosclerosis / epidemiology
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Intracranial Thrombosis / epidemiology
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Patient Selection
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Risk Factors
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alpha 1-Antitrypsin Deficiency / epidemiology*