1. Department of Tumor and Diagnostic Pathology, Nagasaki University, Nagasaki, Japan.
2. Department of Tissue and Histopathology Section, Division of Scientific Data Registry, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan.
3. Department of Radiation Medical Sciences, Nagasaki University, Nagasaki, Japan.
4. Laboratory for Radiobiology and Molecular Genetics, Vinca Institute of Nuclear Sciences, Belgrade, Serbia.
5. Department of School of Medicine, Nagasaki University, Nagasaki, Japan.
6. Department of Molecular Medicine, Nagasaki University, Nagasaki, Japan.
7. Department of Otolaryngology-Head and Neck Surgery, Nagasaki University Hospital, Nagasaki, Japan.
8. Department of Pathology, National Hospital Organization Nagasaki Medical Center, Omura, Japan.