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Takeshi Matsuda
Department of Gastroenterology, Nippon Medical School Tama-Nagayama Hospital
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Yuji Okihama
Department of Gastroenterology, Nippon Medical School Tama-Nagayama Hospital
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Takayuki Kojima
Department of Gastroenterology, Nippon Medical School Tama-Nagayama Hospital
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Makoto Hiroi
Department of Gastroenterology, Nippon Medical School Tama-Nagayama Hospital
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Masahiko Onda
First Department of Surgery, Nippon Medical School