1. United Nations. Sustainable Development Goals: Decade of Action. https://www.un.org/sustainabledevelopment/decade-of-action/. Accessed 26 January 2020.
2. World Health Organization. End TB Strategy: Global strategy and targets for tuberculosis prevention, care and control after 2015. https://www.who.int/tb/post2015_strategy/en/. Accessed 26 January 2020.
3. World Health Organization. Hepatitis: Combating hepatitis B and C to reach elimination by 2030. https://www.who.int/hepatitis/publications/hep-elimination-by-2030-brief/en/. Accessed 26 January 2020.
4. World Health Organization. Urgent health challenges for the next decade. https://www.who.int/news-room/photo-story/photo-story-detail/urgent-health-challenges-for-the-next-decade. Accessed 26 January 2020.
5. United Nations Department of Economic and Social Affairs. Growing at a slower pace, world population is expected to reach 9.7 billion in 2050 and could peak at nearly 11 billion around 2100. 17 June 2019. https://www.un.org/development/desa/en/news/population/world-population-prospects-2019.html. Accessed 27 January 2020.
6. United Nations Climate Change. The Paris Agreement. https://unfccc.int/process-and-meetings/the-paris-agreement/the-paris-agreement. Accessed 27 January 2020.
7. Hubbert MK. Nuclear energy and the fossil fuels. https://web.archive.org/web/20080527233843/http://www.hubbertpeak.com/hubbert/1956/1956.pdf. Accessed 27 January 2020.
8. Ho JY, Hendi AS. Recent trends in life expectancy across high income countries: retrospective observational study. BMJ. 2018;362:k2562. https://www.bmj.com/content/362/bmj.k2562. 30111634