Lembo, Rosalba, Giovanni Landoni, Lorenzo Cianfanelli, and Antonio Frontera. 2021. “Air Pollutants and SARS-CoV-2 in 33 European Countries”. Acta Biomedica Atenei Parmensis 92 (1): e2021166. https://doi.org/10.23750/abm.v92i1.11155.