53 Clinical Trial on Facemasks in Children analysing Carbon Dioxide levels. Peer reviewed randomised clinical trial. (www.youtube.com) posted 3 years ago by wideawakeuk 3 years ago by wideawakeuk +53 / -0 7 comments share 7 comments share save hide report block hide replies
link to the article: https://jamanetwork.com/journals/jamapediatrics/fullarticle/2781743