Evaluation of the types, efficient use and health risks of application of silver-based biocides to provide antimicrobial properties to face masks applied during the Covid-19 crisis, Mast, Jan, Blaude Marie-Noelle, Siciliani Lisa, Cheyns Karlien, Waegeneers Nadia, Vleminckx Christiane, Van Loco Joris, and Verleysen Eveline , 14/07/2022, Brussels, Belgium, p.48, (2022)