1. Department of Neural and Pain Sciences School of Dentistry and Center to Advance Chronic Pain Research University of Maryland Baltimore Baltimore MD USA
2. Department of Neurosurgery Johns Hopkins University Baltimore MD USA
3. Clinical Neuroengineering, BrainMind Institute and Centre of Neuroprosthetics (CNP) Swiss Federal Institute of Technology (EPFL) Geneva Switzerland
4. Swiss Federal Institute of Technology Valais (EPFL Valais) Sion Switzerland
5. WyssCenter of Bio and Neuroengineering Geneva Switzerland
6. Department of Pain Medicine Peking University People's Hospital Beijing China
7. Department of Pain and Translational Symptom Science School of Nursing and Center to Advance Chronic Pain Research University of Maryland Baltimore Baltimore MD USA