Medicine
Ribavirin
Pneumonia
Coronavirus disease 2019 (COVID-19)
Pediatrics
Disease
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
Proportional hazards model
Viral pneumonia
Severity of illness
Coronavirus
Internal medicine
Intensive care medicine
Infectious disease (medical specialty)
Immunology
Virus
Hepatitis C virus
