^○Chikage Narui¹, Masaru Sakamoto¹, Shinnosuke Iwai¹, Souta Fukushima¹, Kenji Umayahara¹, Joe Toda¹, Tadao Tanaka¹, Aikou Okamoto² (1.Department of Gynecology, Sasaki Foundation Kyoundo Hospital, Japan, 2.Department of Obstetrics and Gynecology, The Jikei University School of Medicine, Japan)

^○Kanako Murata, Fuyuko Nagai, Yuko Matsuda, Mariko Nakahara, Yasuka Miyakuni, Kentaro Miyai (Department of Gynecology, Tobu Chiiki Hospital, Tokyo, Japan)

^○Hideaki Tsuyoshi, Daisuke Inoue, Yumiko Miyazaki, Toshimichi Onuma, Tetsuji Kurokawa, Yoshio Yoshida (Department of Obstetrics and Gynecology, University of Fukui, Japan)

^○Satoshi Okada¹, Nobyuyuki Susumu¹, Ryosuke Shibui¹, Yoshimasa Kawarai¹, Motomasa Ihara¹, Maki Kihara¹, Fumio Kataoka¹, Naonori Yoshioka⁴, Takayuki Shiomi³, Yuichiro Hayashi³, Takashi Ishida², Hirokazu Tanaka¹ (1.Department of Obstetrics and Gynecology, IUHW Narita Hospital, Chiba, Japan, 2.Department of Gastrointestinal Surgery, IUHW Narita Hospital Chiba, Japan, 3.Department of Pathology, IUHW Narita Hospital Chiba, Japan, 4.Department of Radiology, IUHW Narita Hospital Chiba, Japan)

^○Yuko Sanada, Gentaro Izumi, Erina Satake, Shun Akaeda, Arisa Takeuchi, Tomoko Makabe, Sayaka Nose, Kahoru Morishima, Yoko Urada, Miyuki Harada, Yasushi Hirota, Kaori Koga, Osamu Hiraike, Yutaka Osuga (Department of Obstetrics and Gynecology, The University of Tokyo Hospital, Tokyo, Japan)

^○Kotaro Miyazaki, Shigenori Hayashi, Nakamura Masaru, Aoki Daisuke (Department of Obstetrics and Gynecology Keio University School of Medicine, Japan)

^○Kana Ohashi, Tsuyoshi Ogura, Kaori Takeuchi, Manaka Sato, Osamu Kodama, David Chen, Sadahiko Shigemitsu (Department of Obstetrics and Gynecology, Ryugasaki Saiseikai Hospital, Ibaraki, Japan)

^○Hiroshi Ishikawa, Aska Sato, Yoshiko Saito, Natsuko Nakamura, Meika Kaneko, Takashi Uehara, Makio Shozu (Department of Reproductive Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan)

^○Eitaro Suzuki, Ayako Kawabata, Keisuke Tomita, Suguru Odajima, Misato Kamii, Kuroda Takafumi, Daito Noguchi, Yukihiro Hirata, Masataka Takenaka, Yasushi Iida, Nozomu Yanaihara, Aikou Okamoto (Department of Obstetrics and Gynecology, The Jikei Medical Unversity, Japan)

^○Yoshinobu Hamada¹, Teppei Ichikawa¹, Yasumasa Koroku¹, Megumi Ogasawara¹, Kanami Saito¹, Noriko Yamaguchi¹, Taichi Irie¹, Makoto Iizuka¹, Kohei Sugimoto², Shuichi Sakamoto¹, Satoshi Takakura¹ (1.Department of Obstetrics and Gynecology, Dokkyo Medical University Saitama Medical Center, Saitama, Japan, 2.Center for Reproductive Medicine, Dokkyo Medical University Saitama Medical Center, Saitama, Japan)

^○Naoyuki Iwahashi (Department of Obstetrics and Gynecology, Wakayama Medical University, Wakayama, Japan)

^○Lee Merry Lee, Sotaro Hayashi, Yoko To, Satoshi Nishiyama, Hiroshi Tsujioka (Iizuka hospital, Japan)