Hiromi IKADO, Nobuko SUHARA, Ikuko YOSHIDA, Yohko OKAMOTO, Naomi IWASHITA, Tomoko HARA, Saki MAEDA, Natsumi SAGATA, Masako YAMAMOTO, Takao KOMAI (Clinical Laboratory, Hyogo Prefectural Amagasaki General Medical Center)

Saho FUJINO, Katsusuke OZAWA, Kei AWANO, Yuuki KAMIHARA, Yuuya FUJIBE, Jin MUROMOTO, Rika SUGIBAYASHI, Seiji WADA, Haruhiko SAGOU (Fetal Medicine, National Center for Child Health and Development)

Tomoko MATSUMOTO, Yoko NAGAYASU, Atsushi DAIMON, Hirosi MARUOKA, Misa NUNODE, Atsuko SUGIMOTO, Takumi SANO, Daisuke FUJITA, Masahide OHMICHI (Department of Obstetrics and Gynecology, Osaka Medical and Pharmaceutical University)

Natsumi YOSHIMOTO, Takashi KAJI, Aya SHIRAKAWA, Ayuka MINEDA, Atsuko YOSHIDA, Takeshi IWASA (Obstetrics and Gynecology, Tokushima University Hospital)