Transrectal laparoscopy using flexible endoscopy with a submucosal tunneling method: Porcine survival model. - Yoshida, Masao; Esaki, Mitsuru; Satoh, Tatsunori; Yamakawa, Shun; Nakajima, Noriko; Ono, Hiroyuki; Gotoda, Takuji (Digestive Endoscopy, 2021)