1. Department of Oral and Maxillofacial Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
2. Department of Radiation Oncology, Kumamoto University Hospital, Kumamoto, Japan
3. Department of Medical Imaging, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
4. Section of Oral Oncology, Department of Oral and Maxillofacial Surgery, Fukuoka Dental College, Fukuoka, Japan
5. Itoh Dento-Maxillofacial Hospital, Kumamoto, Japan