1. Department of Clinical Oral Oncology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
2. Oral Management Center, Nagasaki University Hospital, Nagasaki, Japan
3. Department of Oral Surgery, Hironokogen Hospital, Kobe, Japan
4. Department of Oral Chrono-Physiology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan