Yamamoto, Masaharu, Iván Serra, A. Calvo, H. Watanabe, K. Endoh, N. Shibuya, and K. Nakamura. 1998. “Comparative Epidemiological Studies on Gallbladder Cancer Between Chile and Japan”. Estudios atacameños, no. 15 (June): 29-33. https://doi.org/10.22199/S07181043.1998.0015.00005.