1.
COVID-19 – The efficacy of the LEAF-mask measured by assessing the viral load of the mask’s inner and outer surface used by nurses in ICUs compared to the N95: a phase II, multicenter, randomized, controlled, open-label, clinical trial protocol. PPCR [Internet]. 2021 Mar. 30 [cited 2024 Nov. 23];7(1). Available from: https://journal.ppcr.org/index.php/ppcrjournal/article/view/128