1. Oral and Pharyngeal Cancer Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20852, USA.
2. Department of Psychiatry, University of California, San Francisco, San Francisco, CA 94158, USA.
3. Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Via Pietro Bucci, 87036 Rende (CS), Italy.
4. Department of Pharmacology and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA.
5. State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
6. Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba-ku, Sendai, Miyagi 980-8578, Japan.
7. Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology, Chiyoda-ku, Tokyo 100-0004, Japan.
8. Japan Science and Technology Agency, Precursory Research for Embryonic Science and Technology, Kawaguchi, Saitama 332-0012, Japan.
9. Department of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA.