Medicine
Tocilizumab
Cytokine storm
Superinfection
Pneumonia
Internal medicine
Interleukin 6
Case fatality rate
Retrospective cohort study
Viral pneumonia
Cytokine
Odds ratio
Gastroenterology
Coronavirus disease 2019 (COVID-19)
Immunology
Disease
Epidemiology
Virus
Infectious disease (medical specialty)
