1. The proportionality of global warming to cumulative carbon emissions;Damon Matthews;Nature,2009
2. Human health effects of air pollution’, environmental pollution;Kampa,2008
3. Sources of greenhouse gas emissions;Overv. Factsheets,2015
4. Clinical characteristics of coronavirus disease 2019 in China;Guan;N. Engl. J. Med.,2020
5. ‘COVID-19 Map’, Johns Hopkins Coronavirus Resource Center, accessed 11 August 2021, https://coronavirus.jhu.edu/map.html.