No abstract available
MeSH terms
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Aged
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Boston
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Clinical Protocols
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Emergency Service, Hospital / standards*
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Female
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Hospitalization / economics
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Hospitalization / statistics & numerical data*
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Humans
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Male
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Medical Records
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Myocardial Infarction / complications
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Myocardial Infarction / diagnosis*
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Retrospective Studies
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Syncope / etiology*