• Face masks effectively limit the probability of SARS-CoV-2 transmission https://science.sciencemag.org/content/early/2021/05/19/science.abg6296 359 comments 20/5/2021

• Face masks effectively limit the probability of SARS-CoV-2 transmission https://science.sciencemag.org/content/early/2021/05/19/science.abg6296 3 comments 23/5/2021 science
• Face masks effectively limit the probability of SARS-CoV-2 transmission https://science.sciencemag.org/content/early/2021/05/19/science.abg6296 2213 comments 20/5/2021 science