1. Mayo Clinic Phoenix Arizona USA
2. Washington University School of Medicine St. Louis Missouri USA
3. National Institutes of Neurological Disorders and Stroke Bethesda Maryland USA
4. AbbVie Irvine California USA
5. Department of Neurology University of California Irvine Irvine California USA
6. American Headache Society Mount Royal New Jersey USA
7. American Migraine Foundation New York New York USA
8. University of California Los Angeles Los Angeles California USA
9. Department of Neurology, Danish Headache Center Copenhagen University Hospital‐Rigshospitalet Copenhagen Denmark
10. Department of Anesthesia Harvard Medical School Boston Massachusetts USA
11. Department of Anesthesia, Critical Care and Pain Medicine Beth Israel Deaconess Medical Center Boston Massachusetts USA
12. Child & Adolescent Headache Program University of California San Francisco San Francisco California USA
13. Atria Academy of Science and Medicine New York New York USA
14. Hospital Universitari Vall d'Hebron Barcelona Spain
15. Albert Einstein College of Medicine Bronx New York USA
16. Georgetown University Hospital Washington DC USA
17. Perelman School of Medicine at the University of Pennsylvania and Children's Hospital of Philadelphia Philadelphia Pennsylvania USA
18. Michigan State University College of Human Medicine East Lansing Michigan USA
19. University of Utah Salt Lake City Utah USA
20. University of Iowa Iowa City Iowa USA
21. Vector Psychometric Group Chapel Hill North Carolina USA
22. Department of Pediatrics University of Cincinnati College of Medicine Cincinnati Ohio USA
23. Division of Behavioral Medicine and Clinical Psychology Cincinnati Children's Hospital Cincinnati Ohio USA
24. University of Pavia Pavia Italy
25. IRCCS Mondino Foundation Pavia Italy
26. NIHR King's Clinical Research Facility King's College London London UK