Created at	Source	Raw Value	Validated value
Oct. 27, 2021, 11 a.m.	usa	Qualitative analysis of the respiratory protective equipment in protecting against the simulated aerosol: intergroup comparison	Qualitative analysis of the respiratory protective equipment in protecting against the simulated aerosol: intergroup comparison
Oct. 16, 2021, 3 p.m.	usa	Intragroups comparison	Intragroups comparison