Taisuke Sato1,2, Tomoko Kawai2, Kohei Kashima2,3, Isaku Omori4, Mitsumasa Shimizu4, Riki Nishimura3, Hironobu Hyodo5, Koji Kugu5, Takeshi Nagamatsu6, Tomoyuki Fujii6, Naoto Takahashi3, Aikou Okamoto1, Kenichiro Hata2
(1. Department of Obstetrics and Gynecology, The Jikei University School of Medicine, Tokyo, Japan, 2. Department of Maternal-Fetal Biology, National Research Institute for Child Health and Development, Tokyo, Japan, 3. Department of Pediatrics, The University of Tokyo Hospital, Tokyo, Japan, 4. Department of Neonatology, Tokyo Metropolitan Bokutoh Hospital, Tokyo, Japan, 5. Department of Obstetrics and Gynecology, Tokyo Metropolitan Bokutoh Hospital, Tokyo, Japan, 6. Department of Obstetrics and Gynecology, The University of Tokyo Hospital, Tokyo, Japan)