No abstract available
Publication types
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Letter
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Research Support, Non-U.S. Gov't
MeSH terms
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Aged
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Biological Specimen Banks / statistics & numerical data
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Blood Group Antigens / analysis*
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COVID-19 Testing / methods
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COVID-19 Testing / statistics & numerical data
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COVID-19* / blood
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COVID-19* / diagnosis
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COVID-19* / epidemiology
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Correlation of Data
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Female
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Humans
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Male
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Middle Aged
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Prospective Studies
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Risk Assessment / methods
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Risk Assessment / statistics & numerical data
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Risk Factors
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SARS-CoV-2 / isolation & purification
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United Kingdom / epidemiology