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K. TAZAWA
lst Dept.of Surg.School of Med., Niigata Univ.
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K. TAJIMA
lst Dept.of Surg.School of Med., Niigata Univ.
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J. SOGA
lst Dept.of Surg.School of Med., Niigata Univ.
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M. FUJIMAKI
lst Dept.of Surg.School of Med., Niigata Univ.
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T. MUTO
lst Dept.of Surg.School of Med., Niigata Univ.
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K. SHIMADA
Dept.of Surg.Prefectural Cancer Center, Niigata Hospital