1. World Health Organization. Pneumonia of unknown cause — China. 2020 Jan 5 [Internet]. Available from: URL: https://www.who.int/csr/don/05-january-2020-pneumonia-of-unkown-cause-china/en/
2. World Health Organization. Novel coronavirus — China. 2020 Jan 12 [Internet]. Available from: URL: https://www.who.int/csr/don/12-january-2020-novel-coronavirus-china/en/
3. The Impact of COVID-19 on Italy: A Lesson for the Future
4. A novel coronavirus outbreak of global health concern
5. World Health Organization. Novel Coronavirus (2019-nCoV) Coronavirus disease 2019 (COVID-19) Situation Report–112. 2020 May 11 [Internet] Available from: URL: https://www.who.int/docs/default-source/coronaviruse/situation-reports/20200511-covid-19-sitrep-112.pdf?sfvrsn=813f2669_2