1. Department of Pediatric Surgery, Research Field in Medicine and Health Sciences, Medical and Dental Sciences Area, Research and Education Assembly, Kagoshima University, Kagoshima, Japan.
2. Division of the Gastrointestinal, Endocrine and Pediatric Surgery, Department of Surgery, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan.
3. Department of Pediatric Surgery, Oita Prefectural Hospital, Oita, Japan.
4. Department of General Thoracic, Breast, and Pediatric Surgery, Fukuoka University, Fukuoka, Japan.
5. Department of Pediatric Surgery, Kurume University School of Medicine, Kurume, Japan.