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Kimitaka TANAKA
Department of Surgery, Otaru Kyokai Hospital
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Eiji TAMOTO
Department of Surgery, Otaru Kyokai Hospital
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Yoshihiro NAKAKUBO
Department of Surgery, Otaru Kyokai Hospital
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Tomoo OKUSHIBA
Department of Surgery, Otaru Kyokai Hospital
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Takeshi KAWAMURA
Department of Surgery, Otaru Kyokai Hospital