Medicine
Intussusception (medical disorder)
Coronavirus disease 2019 (COVID-19)
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
Pandemic
Reduction (mathematics)
Population
2019-20 coronavirus outbreak
Intensive care medicine
Pediatrics
Surgery
Internal medicine
Virology
Disease
Environmental health
Infectious disease (medical specialty)
Geometry
Mathematics
Outbreak
