In Kyung Yoo, et al. “Clinical Usefulness of Linked Color Imaging for Detection and Characterization of UndifferentiatedType Early Gastric Cancer”. Turkish Journal of Gastroenterology, vol. 34, no. 4, Apr. 2023, pp. 356-63, https://tjg.avesjournals.com/index.php/tjg/article/view/4887.