1. Coronavirus disease 2019 (COVID-19) outbreak in Iran: actions and problems;Abdi;Infect Control Hosp Epidemiol,2020
2. 9. Worldometer. Coronavirus (COVID-19) mortality rate. Last updated March 5, 2020. https://www.worldometers.info/coronavirus/coronavirus-death-rate/#who-03-03-20. Accessed April 3, 2020.
3. 8. Statista Research Department. Share of elderly population in Italy 2009–2020. Published March 23, 2020. https://www.statista.com/statistics/785104/elderly-population-in-italy/. Accessed April 3, 2020.
4. 1. WHO. Situation report–1. Novel coronavirus (2019-nCoV). Published January 21, 2020. https://www.who.int/emergencies/diseases/novel-coronavirus-2019/situation-reports. Accessed April 3, 2020.
5. 5. Kaggle. Novel corona virus 2019 dataset. n. d. https://www.kaggle.com/sudalairajkumar/novel-corona-virus-2019-dataset. Accessed April 3, 2020.