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Pharyngeal observation via transoral endoscopy using a lip cover‐type mouthpiece |
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| Authors: | Taro Iwatsubo Ryu Ishihara Kentaro Nakagawa Masayasu Ohmori Hiroyoshi Iwagami Kenshi Matsuno Shuntaro Inoue Hiroko Nakahira Noriko Matsuura Satoki Shichijo Akira Maekawa Takashi Kanesaka Sachiko Yamamoto Yoji Takeuchi Koji Higashino Noriya Uedo Kazuhide Higuchi |
| Abstract: | |
| Keywords: | endoscopy esophageal cancer pharyngeal cancer postcricoid area Valsalva maneuver |