Signorelli C, Odone A, Gianfredi V, Bossi E, Bucci D, Oradini-Alacreu A, et al. COVID-19 mortality rate in nine high-income metropolitan regions . Acta Biomed [Internet]. 2020 Jul. 20 [cited 2024 Jul. 17];91(9-S):7-18. Available from: https://mattioli1885journals.com/index.php/actabiomedica/article/view/10134