Coronavirus disease 2019 (COVID-19)
Retrospective cohort study
Cohort
China
Medicine
2019-20 coronavirus outbreak
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
Viral shedding
Duration (music)
Virology
Geography
Internal medicine
Disease
Virus
Outbreak
Infectious disease (medical specialty)
Art
Literature
Archaeology
