1. Department of Neonatal Medicine Osaka Women's and Children's Hospital Izumi Japan
2. Maternal & Child Health Information Center, Osaka Women's and Children's Hospital Japan
3. Division of Environmental Medicine and Population Sciences, Department of Social and Environmental Medicine, Graduate School of Medicine Osaka University Japan
4. Osaka Regional Center for Japan Environment and Children's Study (JECS) Osaka University Suita Japan
5. Department of Pediatrics Osaka University Graduate School of Medicine Suita Japan
6. Department of Obstetrics and Gynecology Osaka University Graduate School of Medicine Suita Japan
7. Institute for Global Health Policy Research Bureau of International Health Cooperation, National Center for Global Health and Medicine Tokyo Japan