Medicine
Cross-sectional study
Incidence (geometry)
Coronavirus disease 2019 (COVID-19)
Health care
Depression (economics)
2019-20 coronavirus outbreak
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
Association (psychology)
Depressive symptoms
Mortality rate
Demography
Environmental health
Psychiatry
Disease
Internal medicine
Pathology
Outbreak
Anxiety
Physics
Infectious disease (medical specialty)
Optics
Economics
Macroeconomics
Economic growth
Philosophy
Epistemology
Sociology
