1. Department of Dental Pharmacology; Hiroshima University Graduate School of Biomedical Sciences; Hiroshima; Japan
2. Cancer Pathophysiology; Division National Cancer Center Research Institute; Tokyo; Japan
3. Department of Dental Science for Health Promotion; Hiroshima University Graduate School of Biomedical Sciences; Japan
4. Department of Pharmacotherapy; Pharmaceutical Sciences; Nihon Pharmaceutical University; Saitama; Japan