1. Department of Otolaryngology University of Pittsburgh Pittsburgh PA USA
2. Department of Neurobiology University of Pittsburgh Pittsburgh PA USA
3. Department of Communication Sciences and Disorders University of Pittsburgh Pittsburgh PA USA
4. Department of Bioengineering University of Pittsburgh Pittsburgh PA USA
5. Scion NeuroStim Raleigh NC USA
6. Jefferson Headache Center, Department of Neurology Thomas Jefferson University Philadelphia PA USA