1. Department of Gastroenterology, Nutrition, and Endocrinology, Osaka Women’s and Children’s Hospital, Osaka 594-1101, Japan
2. Department of Pathology, Osaka Women’s and Children’s Hospital, Osaka 594-1101, Japan
3. Department of Hematology/Oncology, Osaka Women’s and Children’s Hospital, Osaka 594-1101, Japan
4. Department of Pediatric Surgery, Osaka Women’s and Children’s Hospital, Osaka 594-1101, Japan