Shojaee, Sajad, Pegah Eslami, Arash Dooghaie Moghadam, Mohamad Amin Pourhoseingholi, Sara Ashtari, Amir Vahedian-Azimi, and Mohammad Reza Zali. 2020. “A Cluster Analysis of Epidemiological and Clinical Factors Associated With the Accumulation Process of the Burden of COVID-19 in European Countries”. Acta Biomedica Atenei Parmensis 92 (1): e2021022. https://doi.org/10.23750/abm.v92i1.10090.