1. Cancer Statistics’22. National Cancer Center. https://ganjoho.jp/public/qa_links/report/statistics/pdf/cancer_statistics_2022.pdf. Accessed 28 Nov 2022
2. Cancer Information Service, National Cancer Center, Japan. Annual survival report of hospital-based cancer registries. https://hbcr-survival.ganjoho.jp/. Accessed 28 Nov 2022
3. Wong MCS, Huang J, Chan PSF, et al. Global incidence and mortality of gastric cancer, 1980–2018. JAMA Netw Open. 2021;4: e2118457.
4. Japanese Gastric Cancer Association. Gastric cancer treatment guidelines. Japan: Kinbara Publishing Co., Ltd; 2021.
5. Janjigian YY, Shitara K, Moehler M, et al. First-line nivolumab plus chemotherapy versus chemotherapy alone for advanced gastric, gastro-oesophageal junction, and oesophageal adenocarcinoma (CheckMate 649): a randomised, open-label, phase 3 trial. Lancet. 2021;398:27–40.