Nozomi NABETANI, Yoshiko SAKABE, Yoshiteru NODA, Hazuki NAKAJIMA, Takeji MITANI, Hikari YOSHIZAWA, Yoshinori MORIYAMA, Takao SEKIYA, Haruki NISHIZAWA (Department of Obstetrics and Gynecology, Fujita Health University School of Medicine)

Kazunobu YAGI, Syunichi YAMAGUCHI, Hikari MATSUYOSHI, Mayuko KAWATA, Toshihiro KITAI, Masumi TAKEDA, Saha YU, Takuhei YOKOYAMA, Toshiya YAMAMOTO, Yukinobu OTA (Obstetrics and Gynecology, Sakai City Hospital)

Makoto OSAKA, Atsushi TAJIMA, Kenrou NOGUCHI, Saya KATAYAMA, Hironori MATSUMOTO, Toru MORISADA, Shinji TANIGAKI, Yoichi KOBAYASHI (Department of Obstetrics and Gynecology, Kyorin University)

Hiroaki MAKINO, Akio KAMIYA, Emi TAKEDA, Yuki YASUHARA, Syuhei NISIBATA, Aya YOSHIDA, Mamoru MORIKAWA, Hidetaka OKADA (Obstetrics and Gynecology, Kansai Medical University)