1. Wang, C, Horby, PW, Hayden, FG, Gao, GF. A novel coronavirus outbreak of global health concern. The Lancet 2020;395:470–3. https://doi.org/10.1016/S0140-6736(20)30185-9.
2. Cucinotta, D, Vanelli, M. WHO declares COVID-19 a pandemic. Acta Biomed: Atenei Parmensis 2020;91:157–60. https://doi.org/10.23750/abm.v91i1.9397.
3. Connor, P. More than nine-in-ten people worldwide live in countries with travel restrictions amid COVID-19 [Internet]. Pew Research Center 2020. Available from: https://www.pewresearch.org/fact-tank/2020/04/01/more-than-nine-in-ten-people-worldwide-live-in-countries-with-travel-restrictions-amid-covid-19/ [Accessed 27 Aug 2020].
4. Maunder, R, Hunter, J, Vincent, L, Bennett, J, Peladeau, N, Leszcz, M, et al. The immediate psychological and occupational impact of the 2003 SARS outbreak in a teaching hospital. CMAJ (Can Med Assoc J) 2003;168:1245–51.
5. Pfefferbaum, B, North, CS. Mental health and the Covid-19 pandemic. N Engl J Med 2020;383:510–12. https://doi.org/10.1056/nejmp2008017.