Sources/Źródła:
https://www.who.int/emergencies/diseases/novel-coronavirus-2019/situation-reports/
https://www.worldometers.info/coronavirus/
https://ourworldindata.org/coronavirus
https://www.who.int/gho/mortality_burden_disease/causes_death/top_10/en/
https://en.wikipedia.org/wiki/List_of_causes_of_death_by_rate
https://en.wikipedia.org/wiki/List_of_countries_by_age_structure