Created at	Source	Raw Value	Validated value
Aug. 10, 2021, 3:30 p.m.	usa	Mortality;Support by IMV/ECMO;Time (days) to improvement	Mortality;Support by IMV/ECMO;Time (days) to improvement
June 15, 2021, 12:32 a.m.	usa	Mortality;Time (days) to improvement	Mortality;Time (days) to improvement