1. Department of Pathology; Osaka City General Hospital; Miyakojima-ku Osaka Japan
2. Department of Pediatric Surgery; Osaka University Graduate School of Medicine; Suita Japan
3. Department of Molecular Pathology; Osaka City University Medical School; Abeno-ku Osaka Japan
4. Department of Pathology; Minami Osaka General Hospital; Suminoe-ku Osaka Japan
5. Department of Pediatric Surgery; Osaka City General Hospital; Miyakojima-ku Osaka Japan
6. Department of Pediatric Surgery; Osaka General Medical Center; Sumiyoshi-ku Osaka Japan
7. Department of Pediatric Neurology; Osaka City General Hospital; Miyakojima-ku Osaka Japan
8. Department of Pediatric Hematology and Oncology; Osaka City General Hospital; Miyakojima-ku Osaka Japan