1. Nevada Institute of Personalized Medicine, University of Nevada, Las Vegas, Nevada USA
2. Department of Environmental & Occupational Health, School of Community Health Sciences, University of Nevada, Las Vegas, Nevada USA
3. Division of Pain Medicine, Mayo Clinic, Rochester, Minnesota USA
4. Department of Neurology, Mayo Clinic Hospital, Phoenix, Arizona USA
5. Division of Education Administration, Mayo Clinic, Scottsdale, Arizona USA
6. Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, Minnesota USA