1. Global, regional, and national life expectancy, all-cause mortality, and cause-specific mortality for 249 causes of death, 1980–2015: a systematic analysis for the Global Burden of Disease Study 2015. Lancet Lond Engl. 2016 Oct 8;388(10053):1459–544.
2. COVID-19 [Internet]. European Centre for Disease Prevention and Control. [cited 2020 Mar 6]. Available from: https://www.ecdc.europa.eu/en/novel-coronavirus-china
3. Mode of Communication of Cholera(John Snow, 1855) [Internet]. [cited 2020 Mar 6]. Available from: https://www.ph.ucla.edu/epi/snow/snowbook.html
4. Public Health England [Internet]. GOV.UK. [cited 2020 Mar 21]. Available from: https://www.gov.uk/government/organisations/public-health-england
5. Coronavirus declared global health emergency. BBC News [Internet]. 2020 Jan 31 [cited 2020 Mar 21]; Available from: https://www.bbc.com/news/world-51318246