Canadian Thoracic Society recommendations regarding the use of face masks by the public during the SARS-CoV-2 (COVID-19) pandemic. Issue 3 (30th July 2020) - Bhutani, Mohit; Hernandez, Paul; Yang, Connie; Bourbeau, Jean; Licskai, Christopher; Dechman, Gail; Dam, Anne Van; Gupta, Samir