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Takeshi YAMANOUCHI
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Akira SUGITA
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Yasunobu YAMAZAKI
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Kazutaka KOGANEI
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Katsumi GOU
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Mitsunobu KIKUCHI
Second Department of Surgery, Yokohama City University School of Medicine,
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Tsuneo FUKUSHIMA
Department of Sugery,Yokohama Municipal Hospital
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Hiroshi SHIMADA
Second Department of Surgery, Yokohama City University School of Medicine,