^○Shiori Yanai, Kunitoshi Kinjo, Kouta Sakakibara, Satoki Senba, Yoshihumi Ochi, Mitsuru Toeda, Kei Kato, Kyoko Shimada, Yasunori Yoshino, Michiru Yasui, Shinaro Sakate, Mari Sawada, Kiyoshi Kanno, Tomonori Hada, Masaaki Andou (Department of Gynecology, Kurashiki Medical Center, Japan)

^○Kiyoshi Kanno, Kota Sakakibara, Mitsuru Toeda, Michiru Yasui, Kei Kato, Kyoko Shimada, Yasunori Yoshino, Mari Sawada, Shintaro Sakate, Tomonori Hada, Shiori Yanai, Masaaki Andou (Department of Obstetrics and Gynecology, Kurashiki Medical Center, Okayama, Japan)

^○Kei Kato, Shiori Yanai, Michiru Yasui, Kyoko Shimada, Yasunori Yoshino, Mari Sawada, Kiyoshi Kanno, Shintaro Sakate, Tomonori Hada, Masaaki Andou (Department of Obstetrics and Gynecology, Kurashiki Medical Center , Japan)

^○Sohmi Kin, Hajime Oishi, Anju Kawaguchi, Yuri Ogata, Hibun Sho, Tomoko Gota, Misao Nakanishi, Kensuke Tomio, Miyuki Sadatsuki (Department of Obstetrics and Gynecology, National Center of Global Health and Medicine, Tokyo, Japan)

^○Kazue Togashi, Yukiyo Kumazawa, Hiromitsu Shirasawa, Wataru Sato, Ayaka Fujishima, Yukihiro Terada (Department of Obstetrics and Gynecology, Akita University Hospital, Akita, Japan)

^○Akira Mitsuhashi^1,2, Yuji Habu², Hiroshi Ishikawa², Makio Shozu² (1.Department of Obstetrics Gynecology, Dokkyo Medical University, 2.Department of Reproductive Medicine, Graduate School of Medicine, Chiba University, Japan)

^○Yumiko Morimoto¹, Yoshiaki Ota¹, Soichiro Suzuki¹, Rikiya Sano¹, Takuya Moriya², Mitsuru Shiota¹ (1.Department of Gynecologic Oncology, Japan, 2.Department of Pathology, Japan)

^○Fusanori Yotsumoto, Chihiro Kiyoshima, Tomohiro Ito, Daisuke Miyahara, Kenichi Yoshikawa, Kohichiro Shigekawa, Yukiko Noguchi, Shingo Miyamoto (Department of Obstetrics and Gynecology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan)

^○Iemasa Koh, Arisa Nomura, Kosuke Nakamoto, Yuriko Omori, Katsuyuki Tomono, Masaki Sekine, Yoshiki Kudo (Department of Obstetrics and Gynecology, Hiroshima University, Hiroshima, Japan)

^○Chihiro Kiyoshima, Fusanori Yotsumoto, Tomohiro Ito, Daisuke Miyahara, Kenichi Yoshikawa, Koichiro Shigekawa, Yukiko Noguchi, Shingo Miyamoto (Department of Obstetrics and Gynecology, Fukuoka University Hospital, Japan)