Delaloye, J.-R., Vernez, D., Suarez, G., de Courten, D., Zingg, W., Perret, V., Metzger, C. M., & Richner, G. (2021). Distribution of low quality filtering facepiece respirators during the COVID-19 pandemic: an independent analysis of the situation in Switzerland. Swiss Medical Weekly, 151(0304), w20459. https://doi.org/10.4414/smw.2021.20459