1. Department of Pathology and Laboratory Medicine Kurume University Medical Center Kurume Fukuoka Japan
2. Department of Pathology Kurume University School of Medicine Kurume Fukuoka Japan
3. Department of Surgery Japan Community Health Care Organization Kurume General Hospital Kurume Fukuoka Japan
4. Department of Anatomical and Cellular Pathology The Chinese University of Hong Kong Hong Kong Hong Kong
5. Department of Pathology Kawasaki Medical School Kurashiki Okayama Japan
6. Department of Biostatistics Center Kurume University School of Medicine Kurume Fukuoka Japan
7. Department of Surgery Nagasaki Harbor Medical Center City Hospital Nagasaki Japan
8. Department of Surgery Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan