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 / epidemiology
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Female
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Follow-Up Studies
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Humans
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Lung / diagnostic imaging*
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Male
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Middle Aged
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Prospective Studies
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Respiratory Distress Syndrome / diagnosis*
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Respiratory Distress Syndrome / etiology
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SARS-CoV-2
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Ultrasonography / methods*