Endoscopic submucosal dissection for superficial esophageal cancer with ulcer scarring using a combination of pocket creation, gel immersion, and red dichromatic imaging - Ishikawa, Tsubasa; Tashima, Tomoaki; Muramatsu, Takahiro; Mashimo, Yumi; Ryozawa, Shomei (Endoscopy, 2024)