No abstract available
MeSH terms
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Aged
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COVID-19 / complications
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COVID-19 / diagnosis*
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COVID-19 / mortality
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Dyspnea / virology*
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Female
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Hospitalization / statistics & numerical data
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Humans
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Hypoxia / virology
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Male
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Middle Aged
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Prognosis
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Randomized Controlled Trials as Topic
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Severity of Illness Index
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Switzerland
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Time Factors