From March 2nd, 2020th, this hospital started as a mainly for COVID-19 infections and has been continuously treating inpatients until now, January 5th, 2022th. the beginning of February, to 2022th, total cumulative number confirmed cases in Korea was 649,669, death toll 5,838, mortality rate 0.89%. The Korean quarantine system hospitalizes patients early stages (COVID-19) disease. We...