Gelardi, Matteo, et al. “Surgical Mask and N95 in Healthcare Workers of Covid-19 Departments: Clinical and Social Aspects ”. Acta Biomedica Atenei Parmensis, vol. 91, no. 4, Nov. 2020, p. e2020171, https://doi.org/10.23750/abm.v91i4.10660.