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Masahide OHMICHI
Department of Obstetrics and Gynecology, Osaka University Medical School
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Keiichi TASAKA
Department of Obstetrics and Gynecology, Osaka University Medical School
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Hirohisa KURACHI
Department of Obstetrics and Gynecology, Yamagata University, School of Medicine
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Yuji MURATA
Department of Obstetrics and Gynecology, Osaka University Medical School