Case of Superficial Cancer Located at the Pharyngoesophageal Junction Which Was Dissected by Endoscopic Laryngopharyngeal Surgery Combined with Endoscopic Submucosal Dissection oleh Kenro Kawada, Tatsuyuki Kawano, Taro Sugimoto, Kazuya Yamaguchi, Yuudai Kawamura, Toshihiro Matsui, Masafumi Okuda, Taichi Ogo, Yuuichiro Kume, Yutaka Nakajima, Andres Mora, Takuya Okada, Akihiro Hoshino, Yutaka Tokairin, Yasuaki Nakajima, Ryuhei Okada, Yusuke Kiyokawa, Fuminori Nomura, Takahiro Asakage, Ryo Shimoda, Takashi Ito