1. Department of Pediatrics, School of Medicine University of Occupational and Environmental Health Kitakyushu Japan
2. Department of Pediatrics, Graduate School of Medical Sciences Kyushu University Fukuoka Japan
3. Bayer HealthCare Pharmaceuticals, Inc. Whippany New Jersey USA
4. Bayer Yakuhin, Ltd. Osaka Japan
5. Department of Anatomic Pathology, Graduate of School of Medical Sciences Kyushu University Fukuoka Japan
6. Department of Pathology and Oncology, School of Medicine University of Occupational and Environmental Health Kitakyushu Japan