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M. Higashino
Department of Obstetrics and Gynecology, Niigata Univ. School of Medicine
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K. Asano
Department of Obstetrics and Gynecology, Niigata Univ. School of Medicine
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M. Yasuda
Department of Obstetrics and Gynecology, Niigata Univ. School of Medicine
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S. Ishii
Department of Obstetrics and Gynecology, Niigata Univ. School of Medicine
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Y. Kazana
Department of Obstetrics and Gynecology, Niigata Univ. School of Medicine
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K. Takakuwa
Department of Obstetrics and Gynecology, Niigata Univ. School of Medicine
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K. Tanaka
Department of Obstetrics and Gynecology, Niigata Univ. School of Medicine