1. Division of TMD & Orofacial Pain Department of Diagnostic and Biological Sciences School of Dentistry University of Minnesota Minneapolis MN USA
2. Department of Prosthodontics University of North Carolina Chapel Hill NC USA
3. Department of Neurology University of Minnesota Minneapolis MN USA
4. Division of Biostatistics School of Public Health University of Minnesota Minneapolis MN USA
5. Department of Radiology University of Minnesota Minneapolis MN USA