1. Department of Oral Medicine SC-63, University of Washington, Seattle, Washington 98195
2. Department of Oral Medicine SC-63, University of Washington, Seattle, Washington 98195, Pain Center, University Hospital RC-76, University of Washington, Seattle, Washington 98195
3. Department of Oral Medicine SC-63, University of Washington, Seattle, Washington 98195, Department of Psychiatry and Behavioral Sciences RP-10, University of Washington, Seattle, Washington 98195