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Ryuichi YANAGIDA
Department of Surgery, Akita University School of Medicine
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Tsutomu SATO
Department of Surgery, Akita University School of Medicine
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Yoshihiro ASANUMA
Department of Surgery, Akita University School of Medicine
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Tomoki FURUYA
Department of Surgery, Akita University School of Medicine
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Makio MIK
Department of Surgery, Public Kakunodate General Hospital
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Kenji KOYAMA
Department of Surgery, Akita University School of Medicine