1. Bray F, Ferlay J, Soerjomataram I, Siegel RL, Torre LA, Jemal A. Global cancer statistics 2018: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries. CA Cancer J Clin. 2018;68:394–424.
2. Ministry of Health, Labour and Welfare. Cancer Information Service, National Cancer Center, Japan. Cancer Registry and Statistics. Vital Statistics of Japan. Page last updated July 28, 2021. https://ganjoho.jp/reg_stat/statistics/dl/index.html#mortality. Accessed 23 Nov 2021.
3. Ministry of Health, Labour and Welfare. Overview of the National Cancer Registry. 2016. www.mhlw.go.jp/content/10900000/000468976.pdf. Accessed 23 Nov 2021.
4. Ministry of Health, Labour and Welfare. Cancer Registry and Statistics. Cancer Information Service, National Cancer Center, Japan. Monitoring of Cancer Incidence in Japan (MCIJ). Page last updated July 28, 2021. https://ganjoho.jp/reg_stat/statistics/dl/index.html#incidence4pref. Accessed 23 Nov 2021.
5. Hashiguchi Y, Muro K, Saito Y, et al. Japanese Society for Cancer of the Colon and Rectum (JSCCR) guidelines 2019 for the treatment of colorectal cancer. Int J Clin Oncol. 2020;25:1–42.