Second Department of Internal Medicine;
Wakayama Medical University;
Department of Endoscopy and Endoscopic Surgery;
Faculty of Medicine;
University of Tokyo;
Division of Research and Development for Minimally Invasive Treatment;
Cancer Center;
Keio University School of Medicine;
Artificial; ulcer; Endoscopic; hemostasis; Endoscopic; submucosal; dissection; Gastric; epithelial; neoplasia; Hemostatic; forceps;