1. Mayo Clinic Phoenix AZ USA
2. University of Utah Salt Lake City UT USA
3. Dartmouth‐Hitchcock Medical Center Lebanon NH USA
4. Thomas Jefferson University Philadelphia PA USA
5. Medstar Georgetown Hospital Washington DC USA
6. University of Colorado Anschutz Medical Campus Aurora CO USA
7. University of Texas Health Science Center at Houston Houston TX USA
8. DENT Neurologic Institute New York NY USA
9. Yale Medicine New Haven CT USA
10. American Migraine Foundation Mantua NJ USA
11. ZS Associates Evanston IL USA