1. Department of Surgery and Science; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan
2. Department of General surgery; Digestive Disease and Surgery institute; Cleveland Clinic; Cleveland USA
3. Department of Pathology and Microbiology; Saga Medical School; Faculty of Medicine; Saga University; Saga Japan
4. Department of Anatomic Pathology; Pathological sciences; Graduate School of Medical Sciences; Kyushu University; Fukuoka Japan