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K. Toyoshima
Department of Obstetrics and Gynecology, School of Medicine, Keio University
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T. Makino
Department of Obstetrics and Gynecology, School of Medicine, Keio University
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T. Sugi
Department of Obstetrics and Gynecology, School of Medicine, Keio University
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K. Iwasaki
Department of Obstetrics and Gynecology, School of Medicine, Keio University
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S. Nozawa
Department of Obstetrics and Gynecology, School of Medicine, Keio University