Successful En-Bloc Resection of Large Superficial Tumors in the Stomach and Colon Using Sodium Hyaluronate and Small-Caliber-Tip Transparent Hood - Yamamoto, H; Kawata, H; Sunada, K; Sasaki, A; Nakazawa, K; Miyata, T; Sekine, Y; Yano, T; Satoh, K; Ido, K; Sugano, K (Endoscopy, 2003)