Seung Eun KIM, et al. “The Role of Second-Look Endoscopy in Endoscopic Submucosal Dissection for Early Gastric Cancer”. Turkish Journal of Gastroenterology, vol. 24, no. 3, July 2019, pp. 218-23, https://tjg.avesjournals.com/index.php/tjg/article/view/2814.