1. Forum of International Respiratory Societies, The global impact of respiratory diseases, 2nd Ed., European Respiratory Society, 2017.
2. The World Bank, Flu Outbreaks Reminder of Pandemic Threat. https://www.worldbank.org/en/news/feature/2013/03/05/flu-outbreaks-reminder-of-pandemic-threat, 5 March 2013.
3. Estimated global mortality associated with the first 12 months of 2009 pandemic influenza A H1N1 virus circulation: a modelling study;Dawood;Lancet Infect Dis.,2009
4. Estimating clinical severity of COVID-19 from the transmission dynamics in Wuhan, China;Wu;Nature Medicine,2020
5. Alegado, S. “Global Cost of Coronavirus May Reach $ 4.1. Trillion, ADB Says,” https://www.bloomberg.com/news/articles/2020-04-03/global-cost-of-coronavirus-could-reach-4-1-trillion-adb-says, Bloomberg April 3, 2020.