1. International Agency for Research on Cancer. https://www.iarc.fr/. Accessed 15 Jan 2019
2. Bray F, Ferlay J, Soerjomataram I, Siegel RL, Torre LA, Jemal A (2018) Global cancer statistics 2018: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries. Ca-Cancer J Clin 68(6):394–424. https://doi.org/10.3322/caac.21492
3. World Health Organization. https://www.who.int/. Accessed 11 January 2019
4. New Global Cancer Data: GLOBOCAN, 2018. https://www.uicc.org/new-global-cancer-data-globocan-2018.
5. American Cancer Society, Cancer Facts & Figures 2019 Report. https://www.cancer.org/research/cancer-facts-statistics/all-cancer-facts-figures/cancer-facts-figures-2019.html.