Created at	Source	Raw Value	Validated value
Sept. 18, 2021, 5 a.m.	usa	single-center	single-center
July 14, 2021, 6 a.m.	usa	unclear	unclear
May 31, 2021, 12:32 a.m.	usa	TODO (nan)
May 28, 2021, 12:32 a.m.	usa	unclear	unclear
May 27, 2021, 12:32 a.m.	usa	TODO (nan)