Yan-xia Li, et al. “Fujinon Intelligent Color Enhancement for the Diagnosis of Early Esophageal Squamous Cell Carcinoma and Precancerous Lesion”. Turkish Journal of Gastroenterology, vol. 25, no. 4, July 2019, pp. 365-9, https://tjg.avesjournals.com/index.php/tjg/article/view/2978.