Nakachi, K., Ikeda, M., Konishi, M., Nomura, S., Katayama, H., Kataoka, T., Todaka, A., Yanagimoto, H., Morinaga, S., Kobayashi, S., Shimada, K., Takahashi, Y., Nakagohri, T., Gotoh, K., Kamata, K., Shimizu, Y., Ueno, M., Ishii, H., Okusaka, T., Furuse, J., , , Okamura, K., Kawamoto, Y., Katanuma, A., Unno, M., Shirakawa, H., Yamaguchi, H., Takahashi, A., Ikeda, M., Yanagibashi, H., Kato, N., Okusaka, T., Sakamoto, Y., Kojima, Y., Higuchi, R., Sasahira, N., Sano, K., Nakagohri, T., Sunakawa, Y., Morinaga, S., Kumamoto, Y., Sugimori, K., Nomura, T., Shibuya, K., Makino, I., Yamazaki, K., Mizuno, N., Kamata, K., Wada, H., Gotoh, K., Sekimoto, M., Ajiki, T., Nakamura, I., Miki, I., Nagano, H., Ohta, K., Okabayashi, T., Furukawa, M., & Fujimori, N. (2023). adjuvant S-1 compared with observation in resected biliary tract cancer (JCOG1202, ASCOT): a multicentre, open-label, randomised, controlled, phase 3 trial. Lancet, 401(10372), 195–203. http://access.bl.uk/ark:/81055/vdc_100174259998.0x000049