1. Department of Oral & Maxillofacial Surgery, and UCSF Pain and Addiction Research Center, University of California at San Francisco, San Francisco, CA, USA
2. Department of Preventative & Restorative Dental Sciences, and Division of Neuroscience, University of California at San Francisco, San Francisco, CA, USA
3. Department of Medicine, and Division of Neuroscience, University of California at San Francisco, San Francisco, CA, USA