○Miki Shiina1, Kensuke Sakai1, Wataru Yamagami1, Mio Takahashi1, Yuka Kuroda1, Takuma Yoshimura1, Takuro Hirano2, Takeshi Makabe3, Tomoko Yoshihama1, Tatsuyuki Chiyoda1, Shigenori Hayashi1, Kouji Bannno1, Daisuke Aoki1
(1.Department of Obstetrics and Gynecology, Keio University School of Medicine, Japan, 2.Department of Obstetrics and Gynecology, Saiseikai Yokohamashi Tobu Hospital, Japan, 3.Department of Obstetrics and Gynecology, National Hospital Organization Tokyo Medical Center, Japan)
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