IHME COVID-19 Forecasting Team, Hay SI. COVID-19 scenarios for the United States. MedRxiv. 12 July 2020. doi:10.1101/2020.07.12.20151191.
Global Burden of Disease Health Financing Collaborator Network. Health sector spending and spending on HIV/AIDS, tuberculosis, and malaria, and development assistance for health: progress towards Sustainable Development Goal 3. The Lancet. 23 April 2020. doi:10.1016/S0140-6736(20)30608-5.