1. Department of Obstetrics and Gynecology, Kurume University School of Medicine
2. Department of Obstetrics and Gynecology, National Hospital Organization Saga Hospital
3. Department of Pediatric Surgery, Kurume University School of Medicine
4. Department of Pediatrics, Kurume University School of Medicine
5. Department of Pediatric Surgery and Transplantation, Graduate School of Medical Sciences, Kumamoto University