Effects of long-duration wearing of N95 respirator and surgical facemask – a pilot study https://www.spreadthis.info:4443/04.%20%20%20%20%20Covid-19%20Transmissibility%20&%20Mask%20information/Masks/Effects%20of%20long-duration%20wearing%20of%20N95%20respirator%20and%20surgical%20facemask%20-%20a%20pilot%20study.pdf Another fact based peer reviewed study on muzzles, woof woof – A
