1. 2019 Global Health Security Index [Internet]. 2019 [cited April 25, 2020]. Available from: https://www.ghsindex.org/wp-content/uploads/2020/04/2019-Global-Health-Security-Index.pdf.
2. The variability of critical care bed numbers in Europe;A Rhodes;Intensive Care Medicine,2012
3. Critical Care Bed Growth in the United States. A Comparison of Regional and National Trends;DJ Wallace;American Journal of Respiratory and Critical Care Medicine,2015
4. How prepared is the US to respond to COVID-19 relative to other countries? [Internet]. 2020 [cited April 25, 2020]. Available from: https://www.healthsystemtracker.org/chart-collection/how-prepared-is-the-us-to-respond-to-covid-19-relative-to-other-countries/#item-start.
5. Estimating COVID-19 Prevalence in Symptomatic Americans [Internet]. 2020 [cited April 21]. Available from: https://news.gallup.com/opinion/gallup/306458/estimating-covid-prevalence-symptomatic-americans.aspx.