Vormen (functionele) maskers (die in Duitsland overigens verplicht zijn) toch een gezondheidsrisico?
https://bmcinfectdis.biomedcentral.c...79-021-06056-0
'Short-time'...
Opvallend detail:
Although, the participants donned various PPEs only for 15-min each, we hypothesize that the CO2 concentrations reached a steady state by 15-min and should be equivalent to when used for 8 h.
??