Affiliation: | 1. Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan 3. Department of Gastroenterological Surgery, National Kyushu Cancer Center, 3-1-1 Notame, Minami-ku, Fukuoka, 811-1395, Japan 2. Department of Oto-Rhino-Laryngology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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