Medicine
Hydroxychloroquine
Azithromycin
Internal medicine
Eosinopenia
Lymphocytopenia
Hazard ratio
Gastroenterology
Retrospective cohort study
Intensive care unit
Regimen
Surgery
Coronavirus disease 2019 (COVID-19)
Antibiotics
Confidence interval
Disease
Infectious disease (medical specialty)
Microbiology
Lymphocyte
Biology
