Underwater endoscopic mucosal resection of colon hemangiomas compatible with the blue rubber bleb nevus syndrome, following endoscopic ultrasonography - Shibuya, Yuko; Okada, Masahiro; Arita, Munefumi; Hayashi, Yoshikazu; Kawata, Hirotoshi; Lefor, Alan Kawarai; Yamamoto, Hironori (Endoscopy, 2022)