A new technique for endoscopic submucosal dissection for early gastric cancer using an external grasping forceps

H. Imaeda, Yasushi Iwao, H. Ogata, H. Ichikawa, M. Mori, N. Hosoe, Tatsuhiro Masaoka, M. Nakashita, Hidekazu Suzuki, N. Inoue, K. Aiura, H. Nagata, K. Kumai, T. Hibi