Hideyuki CHIDA, Toshihiro OGASAWARA, Kotoka KIKUCHI, Tatsunori SAITO, Atsumi CHIBA, Masayuki SATO (Department of Obstetrics and Gynecology, Iwate Prefectural Ninohe Hospital)

Riko TAKAYOSHI¹, Toshiyuki HATA¹, Tomomi KAWAHARA¹, Tomomi YAMANISHI¹, Saori BOUNO¹, Aya KOYANAGI¹, Aya ITOU¹, Takahito MIYAKE¹, Mohamed Ahmed Mostafa ABOELLAIL² (1.Obstetrics and Gynecology, Miyake Clinic, 2.Obstetrics and Gynecology, Sohag University)

Eiri SHIMA¹, Kazufumi HAINO¹, Kensuke MATSUMOTO², Kaoru YAMAWAKI¹, Kazuaki SUDA¹, Mina ITSUKAICHI¹, Koji NISHIJIMA¹, Kosuke YOSHIHARA¹ (1.Obstetrics, Department of Obstetrics and Gynecology, Niigata University Medical School., 2.Department of Obstetrics and Gynecology, Sado General Hospital)

Youko TANAKA^1,2, Motoyoshi KAWATAKI² (1.Obstetrics, Matono Wemen’s Clinic, 2.神奈川県立こども医療センター新生児科)

Akihiko YUNOKIZAKI, Mayumi TOKUNAKA, Maya MACHI, Aiko SEKINE, Yuka YAMASHITA, Hiroko TAKITA, Shoko HMADA, Ryu MATSUOKA, Akihiko SEKIZAWA (Obstetrics and Gynecology, SHOWA University Hospital)

Aya KOYANAGI, Toshiyuki HATA, Tomomi KAWAHARA, Miyu KONISHI, Aya ITOH, Riko TAKAYOSHI, Takahito MIYAKE (Department of Obstetrics and Gynecology, Miyake Clinic)

Aya KOYANAGI, Toshiyuki HATA, Tomomi KAWAHARA, Miyu KONISHI, Saori BOUNO, Tomomi YAMANISHI, Riko TAKAYOSHI, Takahito MIYAKE (Department of Obstetrics and Gynecology, Miyake Clinic)