Masatake TOSHIMITSU, Naoya AKIBA, Daiki SAMEJIMA, Mari ICHINOSE, Takahiro SEYAMA, Keiichi KUMASAWA, Takayuki IRIYAMA, Yutaka OSUGA (Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo)

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

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

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

Tomomi KAWAHARA, Toshiyuki HATA, Takahito MIYAKE (Obstetrics and Gynecology, Miyake Clinic)

Ayuka MINEDA, Takashi KAJI, Natsumi YOSHIMOTO, Aya SHIRAKAWA, Atsuko YOSHIDA, Takeshi IWASA (Obstetrics & Gynecology, phD)

Takafumi OKSA, Kenji HORIE, Kaori FUNABASHI, Manabu OGOYAMA, Hirotada SUZUKI, Rie USUI, Akihide OHKUCHI, Hironori TAKAHASHI, Hiroyuki FUJIWARA (Department of Obstetrics and Gynecology, Jichi Medical University)

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