1. School of Psychology; University of Kent; Canterbury Kent UK
2. Scion NeuroStim, LLC; Raleigh NC
3. Department of Neurology; Duke University Medical Center; Durham NC
4. Department of Biostatistics and Bioinformatics; Duke University Medical Center; Durham NC
5. School of Public Health; Yale University; New Haven CT
6. Headache Wellness Center; Greensboro NC
7. Department of Otolaryngology; University of Miami Miller School of Medicine; Miami FL
8. Michigan Headache and Neurological Institute; Ann Arbor MI
9. Department of Anesthesiology; Duke University Medical Center; Durham NC USA
10. East Kent Neuro-Rehabilitation Service; East Kent Hospitals University NHS Foundation Trust; Canterbury Kent UK
11. Carolina Headache Institute; Chapel Hill NC USA