1. Division of Neonatology, Center of Maternal, Fetal and Neonatal Medicine, Saitama Medical Center, Saitama Medical University, Kamoda, Kawagoe, Saitama, Japan
2. Department of General and Pediatric Surgery, Masuko Memorial Hospital, Nakamura, Nagoya, Japan
3. Department of Pediatric Surgery, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
4. Department of Obstetrics and Gynecology, VACSERA, Giza, Egypt
5. Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
6. Department of Perinatal Development and Preventive Medicine, Mie University Graduate School of Medicine, Tsu, Mie, Japan
7. Kinjogakuin University, Moriyama-ku, Nagoya, Aichi, Japan