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Kikuchi, Daisuke; Kaise, Mitsuru; Nomura, Kosuke; Toba, Takahito; Kuribayashi, Yasutaka; Tanaka, Masami; Yamashita, Satoshi; Furuhata, Tsukasa; Matsui, Akira; Mitani, Toshifumi; Hoteya, Shu; Iizuka, Toshiro . (2017). Feasibility Study of the Three-Dimensional Flexible Endoscope in Endoscopic Submucosal Dissection: An ex vivo Animal Study. Digestion, 95(3), 237–241. doi:10.1159/000468924 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research