| Institution: | 1. Department of Fetal-Maternal Medicine, Nagara Medical Center, Gifu, Japan;2. Perinatal Care Center, Yamaguchi University Hospital, Ube, Japan;3. Maternal and Perinatal Care Center, Seirei Hamamatsu General Hospital, Hamamatsu, Japan;4. The Department of Perinatology, National Cerebral Cardiovascular Center, Osaka, Japan;5. Clinical Research Center, National Center for Child Health and Development, Tokyo, Japan;6. Center for Maternal-Fetal and Neonatal Medicine, National Center for Child Health and Development, Tokyo, Japan |
