1. Department of Pediatric Surgery Tohoku University Graduate School of Medicine Sendai Japan
2. Aichi Developmental Disability Center Kasugai Japan
3. Department of Pediatric Surgery St. Marianna University School of Medicine Kawasaki Japan
4. Kokura Minami Medical Care Hospital Kitakyusyu Japan
5. Department of Pediatric Surgery Fujita Health University Graduate School of Medicine Toyoake Japan
6. Fukuoka College of Health Sciences Fukuoka Japan
7. Mashiko Memorial Hospital Nagoya Japan