Eri KONO, Izumi HONNDA, Eri SOGA, Minako MATSUDA, Yuno ARIYAMA, Misa HAMAKAWA, Yoshimi TANIGUCHI (Obstetrics and Gynecology, Tokyo Metropolitan Tama Medical Center)

Junko TAMAI¹, Yoshifumi KASUGA¹, Asuka HAMURO¹, Yuka FUKUMA¹, Yuya TANAKA¹, Keita HASEGAWA¹, Toshimitsu OTANI¹, Satoru IKENOUE¹, Daigo OCHIAI², Mamoru TANAKA¹ (1.Obstetrics and Gynecology, Keio University, 2.Obstetrics and Gynecology, Kitasato University)

Naoki TERAYA, Hiroko TAKITA, Takeshi NAKAMURA, Mayumi TOKUNAKA, Tatsuya ARAKAKI, Ryu MATSUOKA, Akihiko SEKIZAWA (Department of Obstetrics and Gynecology, Showa University School of Medicine)

Ruiko MIURA, Minako GOTO, Yusuke SUZUKI, Takashi SHIMOKAWA, Tatsuya IZDEBSKI, Ayumi OKUYAMA, Kohei SEO, Kiyotake ICHIZUKA, Masaaki NAGATSUKA (Obstetrics and Gynecology, Showa University Northern Yokohama Hospital)

Emiko NITTA¹, Chiaki TENKUMO¹, Megumi ITO¹, Nobuhiro MORI¹, Uiko HANAOKA¹, Hirokazu TANAKA¹, Kenji KANENISHI¹, Toshiyuki HATA² (1.Department of Perinatology and Gynecology, Kagawa University Hospital, 2.Department of Obstetrics and Gynecology, Miyake Clinic)