Created at	Source	Raw Value	Validated value
April 7, 2021, 1 a.m.	irct	The trend of clinical symptoms of Covid-19 disease Blood oxygen level (O2 Saturation) Hospitalization Requires intubation or ICU Death	The trend of clinical symptoms of Covid-19 disease Blood oxygen level (O2 Saturation) Hospitalization Requires intubation or ICU Death