No abstract available
MeSH terms
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Aged, 80 and over
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COVID-19 Nucleic Acid Testing / statistics & numerical data*
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COVID-19* / therapy
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COVID-19* / virology
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Cohort Studies
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Female
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Follow-Up Studies
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Hospitalization*
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Humans
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Male
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Mortality
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Risk Factors
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SARS-CoV-2* / isolation & purification