Protective Effect of Surgical Masks versus N95 Respirator in Prevention of SARS-CoV-2 Contami-nation in Healthcare Professionals: Systematic Re-view Protocol . PPCR [Internet]. 2022 Dec. 2 [cited 2024 Jul. 3];8(3):10-8. Available from: https://journal.ppcr.org/index.php/ppcrjournal/article/view/162