1. Department of Pediatric Surgery; Niigata City General Hospital; Niigata City Fukuoka Japan
2. Department of Pediatric Surgery; Kurume University School of Medicine; Kurume Fukuoka Japan
3. Department of Radiology; Niigata City General Hospital; Niigata City Fukuoka Japan
4. Department of Pathology; Niigata City General Hospital; Niigata City Fukuoka Japan