1. Department of Transplant Surgery, Jichi Medical University, Shimotsuke, Japan;
2. Center of Maternal-Fetal, Neonatal and Reproductive Medicine, National Center for Child Health and Development, Division of Obstetrics, Tokyo, Japan;
3. Department of Pharmacy, National Center for Child Health and Development, Tokyo, Japan;
4. Perinatal Mother and Infant Care Center, Kanazawa University Hospital, Kanazawa, Japan;
5. Department of Pediatrics, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan;
6. Department of Obstetrics and Gynecology, Jichi Medical University, Shimotsuke, Japan;
7. Department of Perinatology and Gynecology, Kagawa University Graduate School of Medicine, Miki, Japan;
8. Department of Allergy and Clinical Immunology, National Center for Child Health and Development, Tokyo, Japan;
9. Division for Clinical Trials, Department of Clinical Research, Center for Clinical Research and Development, National Center for Child Health and Development, Tokyo, Japan;
10. Department of Development Strategy, National Center for Child Health and Development, Tokyo, Japan