1. Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki 852-8523, Japan
2. Department of Gastroenterology and Hepatology, Nagasaki University Hospital, Nagasaki 852-8501, Japan
3. Division of Surgical Oncology, Department of Translational Medical Sciences, Nagasaki University, Nagasaki 852-8501, Japan
4. Department of Human Genetics, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki 852-8523, Japan
5. Department of Radiation Medical Sciences, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki 852-8523, Japan
6. Department of Physiological Disciplines, Semey State Medical University, Semey 071400, Kazakhstan
7. Department of Pathological Anatomy and Forensic Medicine, Semey State Medical University, Semey 071400, Kazakhstan
8. Department of Operative Dentistry, Asfendiyarov Kazakh National Medical University, Almaty 050000, Kazakhstan
9. Biostatics Section, Division of Scientific Data Registry, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki 852-8523, Japan
10. Department of Pathology, National Hospital Organization Nagasaki Medical Center, Omura 856-8562, Japan