1. https://www.who.int/publications/i/item/WHO-2019-nCoV-mortality-reporting-2020-1
2. Public data on deaths in the Italian municipalities for the years 2011-2022, provided by ISTAT, https://www.istat.it/it/archivio/240401
3. Dipartimento di Protezione Civile (DPC), http://www.protezionecivile.gov.it/
4. Data COVID-19 Italy, Italian Department for Civil Protection (DPC), https://github.com/pcm-dpc/COVID-19/tree/master/dati-andamento-nazionale
5. Data COVID-19 Italy, Italian National Institute of Health (ISS), https://www.epicentro.iss.it/coronavirus/sars-cov-2-sorveglianza/