Yasushi Sano is a Clinical Professor at Kansai Medical University as well as the Director of Gastrointestinal Center at Sano Hospital, Kobe, Japan. He is one of the world leaders in the field of diagnostic and therapeu-tic colonoscopy. He has presented many lectures regarding image-enhanced endoscopy (IEE) technique and demonstrated endoscopy live with EMR/ESD technique at several countries. He skillfully uses magnifying colonoscopy with advanced imaging technique. He has published more than 180 peer-reviewed manuscripts and 9 book chap-ters. He is a member of several advisory boards including Gastroen-terological Endoscopy (JGES, JGA, Japan), Gastrointestinal Endoscopy (GIE, USA), and Chairman of Asian Novel Bio-Imaging and Intervention Group (ANBIIG). He has participated in more than 230 workshops/symposiums across various countries.

Philip Chiu is Professor of Division of Upper GI and Metabolic Surgery, Depart-ment of Surgery, Director of Multi-Scale Medical Robotics Center, Director of Endoscopy Center, Institute of Digestive Disease and Director of CUHK Chow Yuk Ho Technology Center for Innovative Medicine and Dean (External Affairs), Faculty of Medicine, Chinese University of Hong Kong. He is the first to perform ESD for treat-ment of early GI cancers in Hong Kong in 2004. In 2010, he per-formed the first peroral endoscopic myotomy (POEM) in Hong Kong as well as pioneered the world first robotic gastric ESD in 2011, fol-lowed by the world first robotic colorectal ESD in 2020. His research interests include esophageal cancer management, minimally invasive and robotic esophagectomy, novel endoscopic technologies for diag-nosis of early GI cancers, endoscopic surgery as well as robotics for endoluminal surgery. He has published more than 370 peer-reviewed manuscripts and 6 book chapters. He is currently co-editor of endos-copy and subject editor for surgical endoscopy.

Rajvinder Singhis a Professor of Medicine with the University of Adelaide and the Director of Gastroenterology at the Lyell McEwin and Mod-bury Hospitals, South Australia. He is an Editorial Board mem-ber of Clinical Endoscopy and past Editorial Board member of Endoscopy, Digestive Endoscopy, and Endoscopy International Open. He has an h-index of 41. He has authored more than 150 publications and book chapters on advanced endoscopic muco-sal imaging and resection techniques. He has been involved in various committees drafting national and international guide-lines on this subject. He was the past chair of the Australian Gas-trointestinal Endoscopic Association (AGEA). He is frequently invited to conduct Basic and Advanced Endoscopy Workshops and has participated in more than 200 workshops/symposiums across various countries.

Noriya Uedo is a Vice-Director, Department of Gastrointestinal Oncology, Osaka International Cancer Institute. He graduated from the School of Medicine, Kagoshima University, in 1992 and started his training in gastrointestinal oncology and endoscopy in the current institution from 1994. He is a Councilor of several Japanese medical societies. He is serving as a Visiting Professor in Fukuoka University Chi-kushi Hospital and used to serve as a Visiting Professor in Lund University, Malmö University Hospital, and Chinese PLA General Hospital.

Kenichi Goda graduated from National Defense Medical College in 1993. He is a gastroenterologist specialized in gastrointestinal endoscopy and the Professor and Director of Gastrointestinal Endoscopy Center of Dokkyo Medical University Hospital. He is the chair-person-elect of Barrett's esophagus society of Japan. He has more than 90 peer-reviewed international publications and has delivered numerous oral and poster presentations in numerous international meetings. He has received awards of Distinguished Paper Award of Japan Gastroenterological Endoscopy Society 2004 and Distinguished Presentation of JDDW 2012.

Chikatoshi Katada graduated from Kitasato University School of Medicine in 1998. From 2001 to 2005, he worked at National Cancer Center Hospital East. From 2005 to 2022, he worked at Kitasato University Hospital. From 2018 to 2019, he participated in the visiting clinician program at Mayo Clinic. From 2022 to the present, he worked at Kyoto University Hospital. He has more than 120 peer-reviewed international publications and has delivered numerous presentations in international meetings. His areas of expertise are clinical research on carcinogenesis and prevention of alcohol-related cancers of the esophagus and head and neck. Therefore, he is well versed in the endoscopic diagnosis and treatment of cancers arising in this area.

X-1 system.- RDI.- TXI.- AI.- Paris classification.- Esophagus: The Japan esophageal society classification.- Stomach: MESDA-G.-Colon: JNET classification.- How to take high-quality images (UGI).- How to take high-quality images (LGI).- Lymphoid folicle.-LGIN/HGIN (small size).- LGIN/HGIN (large size).- Superficial cancer (flat type).- Superficial cancer (polypoid type).- Reflex esophagitis.- Papilloma.- LGIN/HGIN (small size).- LGIN/HGIN (large size).- Multple lugol-voiding lesions.- Superficial cancer (0-¿, M).- Superficial cancer (0-¿,M).- Superficial cancer (SM).- Superficial cancer (SM).- Superficiail cancer (large, ¿ 2/3 circumference).- SSBE and LSBE.- Barrett's dysplasia (small size).- Barrett's dysplasia (large size).- Barrett's adenocarcinoma (flat type).- Barrett's adenocarcinoma (polypoid type).- Ectopic gastric metaplasia.- denoma (Papillary resion).- Adenoma (Gastric type, non-papillary resion).- Adenoma (Intestinal type, non-papillary resion).- Duodenal early cancer (non-papillary resion).- Gastric metaplasia.- Hyperplastic polyp.- fundic glnad polyp.- Adenoma.- Early garstric cancer (0-¿, M, Differentiated type).- Early garstric cancer (0-¿a, M, Differentiated type).- Early garstric cancer (0-¿c, M, Differentiated type).- Early garstric cancer (any, SM, Differentiatted type).- Early garstric cancer (0-¿c, M, Undifferentiated type).- Early garstric cancer (any, SM, Undifferentiatted type).- Early gastric cancer (UL¿).- Early gastric cancer after HP eradication (1).- Early gastric cancer after HP eradication (2).- Gastric adenocarcinoma of fundic-gland type.- Gastric MALT Lymphoma.- Hyperplastic polyp (HP).- sessile serrated lesion (SSL).- SSL with dsyplasia or cancer.- Superficial serrated adenoma (SuSA).- Tradiational serrated adenoma.- Polypoid-type adenoma (0-¿).- Flat-type adenoma.- Depressed-type adenoma (0-¿c).- Early colorectal cancer (0-¿, Polpyoid, M or SM).- Early colorectal cancer (0-¿P¿¿c ,Head or Stalk invasion).- Early colorectal cancer (0-¿a, LST-NG, M or SM).- Early colorectal cancer (0-¿ä¿s, LST-G-Mix).- Early colorectal cancer (0-¿ä¿c, SM).- Early colorectal cancer (0-¿s¿¿c, SM).- Anal condyloma or cancer.