Created at	Source	Raw Value	Validated value
Feb. 18, 2021, 12:31 a.m.	usa	Incidence of changes in specific clinical events in patients with covid-19.	Incidence of changes in specific clinical events in patients with covid-19.
Oct. 26, 2020, 11:31 p.m.	usa	Need for mechanical ventilation	Need for mechanical ventilation