Created at	Source	Raw Value	Validated value
May 19, 2021, 12:31 a.m.	usa	inclusion criteria: - sars-cov-2 infection is confirmed on antigen test or pcr test - pulmonary infiltrative shadow is confirmed on chest x-ray test - pao2/fio2 <=200mmhg at the time of screening	inclusion criteria: - sars-cov-2 infection is confirmed on antigen test or pcr test - pulmonary infiltrative shadow is confirmed on chest x-ray test - pao2/fio2 <=200mmhg at the time of screening