Affiliation: | 1. Department of Obstetrics and Gynecology, Kyushu University Hospital, Kyushu University, Fukuoka, Japan;2. Center of Maternal-Fetal, Neonatal and Reproductive Medicine, National Center for Child Health and Development, Tokyo, Japan;3. Department of Fetal-Maternal Medicine, Nagara Medical Center, Gifu, Japan;4. Maternal Fetal Medicine, Osaka Women's and Children's Hospital, Izumi, Japan;5. Department of Pediatric Surgery, Osaka Women's and Children's Hospital, Izumi, Japan |