Studies describes CO2 level in children after 3 minutes of mask wearing, concluding evidence for adverse effects of wearing such masks.
https://jamanetwork.com/journals/jamapediatrics/fullarticle/2781743
Studies describes CO2 level in children after 3 minutes of mask wearing, concluding evidence for adverse effects of wearing such masks.
https://jamanetwork.com/journals/jamapediatrics/fullarticle/2781743