Created at	Source	Raw Value	Validated value
Sept. 29, 2021, 8:30 a.m.	usa	single-center	single-center
May 15, 2021, 12:32 a.m.	usa	unclear	unclear
May 8, 2021, 12:31 a.m.	usa	TODO (nan)
May 5, 2021, 11:25 a.m.	usa	unclear	unclear