1. Department of Pathology, Clinical Research Center, National Hospital Organization Nagasaki Medical Center, Omura 856-8562, Japan
2. Institute of Endocrinology and Metabolism, National Academy of Medical Sciences of Ukraine, Kiev, Ukraine
3. Department of Radiation Medical Science, Atomic Disease Institute, Nagasaki University, Nagasaki, Japan
4. Department of Epidemiology, Atomic Disease Institute, Nagasaki University, Nagasaki, Japan
5. Department of Surgery, National Hospital Organization Nagasaki Medical Center, Omura 856-8562, Japan
6. Department of Tumor and Diagnostic Pathology, Atomic Disease Institute, Nagasaki University, Nagasaki, Japan