Kazuaki SUDA, Kaoru YAMAWAKI, Eiri SHIMA, Mina ITSUKAICHI, Kazufumi HAINO, Koji NISHIJIMA, Kosuke YOSHIHARA (Obstetrics and Gynecology, Niigata University Medical & Dental Hospital)

Taisuke MORITA, Katsusuke OZAWA, Yuki KAMIHARA, Yuya FUZIBE, Kazuhiro KAZIWARA, Zin MUROMOTO, Rika SUGIBAYASHI, Seiji WADA, Haruhiko SAGO (Fetal Medicine Department, National Center for Child Health and Development)

Yoshiaki TANAKA^1,2, Hiroshi KAWAMURA², Shoichi NISHIDA³, Yoshitomo YASUI³, Takashi SHIMOTAKE³, Shinya HIRABUKI¹, Hiromasa SASAKI¹, Tsutomu HOSHIBA¹, Yoshio YOSHIDA² (1.Obstetrics and Gynecology, Ishikawa Prefectural Central Hospital, 2.Obstetrics and Gynecology, University of Fukui Hospital, 3.Pediatric Surgery, Ishikawa Prefectural Central Hospital)

Sakurako MISHIMA¹, Mayuko SATO², Kazumasa TANI¹, Eriko ETO¹, Kei HAYATA¹, Satoshi NARAI³, Shunsaku KAJI³, Yoshihumi KAWAHARA², Hisashi MASUYAMA¹ (1.Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2.Obstetrics and Gynecology, Tsuyama Chuo Hospital, 3.Pediatrics, Tsuyama Chuo Hospital)

Akane KURIKI, Shoko HAMADA, Reina KOMATSU, Yuki MUKAI, Minako GOTO, Ryosuke AKINO, Takeshi NISHI, Tetsuro KONDO, Katsufumi OTSUKI (Obstetrics and Gynecology, SHOWA University Koto Toyosu Hospital)

Sayumi NAKAO, Shoko HAMADA, Hiroko TAKITA, Yuka YAMASHITA, Tatsuya ARAKAKI, Mayumi TOKUNAKA, Ryu MATSUOKA, Akihiko SEKIZAWA (Obstetrics and Gynecology, Showa University Hospital)

Yuko MORIZUMI¹, Kazunori BABA¹, Yuuko NISHIJIMA¹, Kaya TSURUGA¹, Nobuhiko HAYASHI¹, Takahiro SEYAMA¹, Toshio NAKAYAMA¹, Yoshiharu TAKEDA², Takahiro YAMASHITA² (1.Aiiku Clinic, 2.Aiiku Hospital)

Satoshi SHINOHARA, Rei SUNAMI, Tatsuya YSHIHARA, Kana MOCHIZUKI, Genki YASUDA, Mayuko KASAI (Department of Obstetrics and Gynecology, Yamanashi Prefectural Central Hospital)