Dr. Wen-Lun Wang is currently the Chief of Digestive Endoscopy of E-Da Hospital in Taiwan. He received his M.D. degree at the Medical school of the National Taiwan University, and his Ph.D. degree at the Institute of Clinical Medicine of National Cheng Kung University. Dr. Wang’s main clinical and research interests included the GI cancer screening and endoscopic intervention, with special emphasis on the image-enhanced endoscopy, endoscopic submucosal dissection (ESD), endoscopic radiofrequency ablation (RFA), and field cancerization over the upper aerodigestive tract.