1. Department of Perinatology and Gynecology, National Cerebral and Cardiovascular Center, Suita, Japan;
2. Department of Pediatrics and Child Health, Kurume University School of Medicine, Fukuoka, Japan;
3. Department of Pediatric Cardiology, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Japan;
4. Department of Neonatology, Kanagawa Children’s Medical Center, Yokohama, Japan;
5. Department of Pediatric Cardiology, Saitama Medical University, Hidaka, Japan;
6. Department of Cardiology, Shizuoka Children’s Hospital, Shizuoka, Japan;
7. Department of Internal Medicine, Kanagawa Children’s Medical Center, Yokohama, Japan;
8. Department of Pediatrics, Tsukuba University, Ibaraki, Japan;
9. Department of Obstetrics and Gynecology, Chiba University, Chiba, Japan;
10. Department of Cardiology, Nippon Medical School, Tokyo, Japan;
11. Department of Cardiology, Nagano Children’s Hospital, Azumino, Japan;
12. Department of Neonatology, Toho University Omori Medical Center, Tokyo, Japan;
13. Department of Pediatric Cardiology, National Cerebral and Cardiovascular Center, Suita, Japan;
14. Department of Perinatology, National Center for Child Health and Development, Tokyo, Japan;
15. Department of Obstetrics and Gynecology, Mie University, Tsu, Japan