Created at	Source	Raw Value	Validated value
Oct. 26, 2020, 11:31 p.m.	usa	inclusion criteria: - ards according to berlin's definition - pcr confirmed covid-19 - length of mechanical ventilation less or equal to 72 hours	inclusion criteria: - ards according to berlin's definition - pcr confirmed covid-19 - length of mechanical ventilation less or equal to 72 hours