2.3 Study setting
COVID-19 illness
RECRUITMENT
Patients admitted to the St. George’s Hospital in Mumbai, a Sir J.J. Group of Hospitals, Mumbai, Maharashtra, India for COVID-19 illness were considered for recruitment in this trial. Ethical approval was taken from the institutional ethics committee of Grant Government Medical College and J.J. Hospital, Mumbai, Maharashtra, India. The study was registered with Clinical Trial Registry of India (CTRI) on the 