Inoki, K., Yamada, M., Kuwabara, H., Takamaru, H., Sekiguchi, M., Sakamoto, T., … Saito, Y. (2019). Newly-developed colonoscope (PCF-PQ260L) is useful for patients with difficult colons. Turkish Journal of Gastroenterology, 30(7), 630–635. https://doi.org/10.5152/tjg.2019.18789