1. Available at: https://www.who.int/news-room/q-a-detail/q-a-on-covid-19-and-masks, Accessed March 3, 2021.
2. A century after their introduction, are surgical masks necessary?;Belkin;AORN J,1996
3. Effectiveness of N95 respirators versus surgical masks against influenza: a systematic review and meta- analysis;Long;J Evid Based Med,2020
4. To mask or not to mask: Modeling the potential for face mask use by the general public to curtail the COVID-19 pandemic;Eikenberry;Infect Dis Model,2020
5. Effects of Forensically-Relevant Facial Concealment on Acoustic and Perceptual Properties of Consonants;Fecher,2014