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Hideharu Hagiya
Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Japan
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Hiroyuki Hanakawa
Department of Otorhinolaryngology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Japan
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Takayuki Katsuyama
Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Japan
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Fumio Otsuka
Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Japan