No abstract available
MeSH terms
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Aged
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Betacoronavirus*
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COVID-19
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COVID-19 Testing
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Clinical Laboratory Techniques
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Comorbidity
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Coronavirus Infections / diagnosis
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Coronavirus Infections / epidemiology*
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Health Care Surveys*
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Humans
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Internationality
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Leukemia, Lymphocytic, Chronic, B-Cell / epidemiology
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Leukemia, Lymphocytic, Chronic, B-Cell / therapy*
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Pandemics*
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Pneumonia, Viral / diagnosis
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Pneumonia, Viral / epidemiology*
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SARS-CoV-2