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Tomio Abe
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Masato Baba
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Sakuzo Komatsu
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Kazuaki Shimamoto
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Osamu Iimura
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Author's Organization:Second Department of Surgery, Sapporo Medial University, School of Medicine Second Department of Surgery, Sapporo Medial University, School of Medicine Second Department of Surgery, Sapporo Medial University, School of Medicine Second Department of Medicine, Sapporo Medial University, School of Medicine Second Department of Medicine, Sapporo Medial University, School of Medicine