No abstract available
MeSH terms
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Adult
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Asymptomatic Infections / epidemiology*
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COVID-19 / diagnosis*
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COVID-19 Nucleic Acid Testing
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Carrier State*
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Cross Infection / prevention & control*
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Female
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Humans
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Japan
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Male
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Mass Screening / methods*
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Pregnant Women
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Prenatal Care / methods*
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Preoperative Care / statistics & numerical data*
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Retrospective Studies
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Reverse Transcriptase Polymerase Chain Reaction
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SARS-CoV-2*
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Tokyo