1. Wolfson Sensory, Pain and Regeneration Centre, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, UK
2. Department of Biotechnological and Applied Clinical Sciences, University of L’Aquila, L’Aquila, Italy
3. Department of Neuroepidemiology, Institute for Medical Informatics, Biometry and Epidemiology, Faculty of Medicine, University Duisburg-Essen, Essen, Germany
4. Department of Neurology, Danish Headache Center, Copenhagen University Hospital – Rigshospitalet, Copenhagen, Denmark
5. Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
6. Department of Neurology and Department of Anesthesia, Critical Care and Pain Medicine, Harvard Medical School and Beth Israel Deaconess Medical Center, Boston, USA
7. Department of Anesthesia, Critical Care and Pain Medicine, Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, USA
8. International Headache Society, London, UK
9. Department of Psychiatry, University of Oxford, Oxford, UK
10. Oxford Precision Psychiatry Lab, NIHR Oxford Health Biomedical Research Centre, Oxford, UK
11. Oxford Health NHS Foundation Trust, Warneford Hospital, Oxford, UK
12. Department of Neurology, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
13. Department of Neurology - Headache Division, University of Miami, Miller School of Medicine, Miami, USA
14. Department of Medicine and Therapeutics, Korle Bu Teaching Hospital, Accra, Ghana
15. Department of Neurology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
16. Headache Unit, Department of Neurology, Hospital Clinico Universitario de Valladolid, Valladolid, Spain
17. Kiel Migraine and Headache Centre, Kiel, Germany
18. Department of Neurology, Christian-Albrechts University, Kiel, Germany
19. Neurology Department, Headache Clinic, Fleni, Buenos Aires, Argentina
20. Department of Neurology, Kasr Alainy Faculty of Medicine, Cairo University, Cairo, Egypt
21. Neurology, Dokkyo Medical University, Mibu, Tochigi, Japan
22. Royal North Shore Hospital, St Leonards, Sydney, Australia
23. Department of Neurology, Klinikum der Universitat Munchen, Munich, Germany
24. Department of Neurology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
25. Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
26. Instituto de Investigación Médica Mercedes y Martín Ferreyra (INIMEC), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional de Córdoba, Córdoba, Argentina
27. IRCCS Mondino Foundation, Headache Science Center, Pavia, Italy
28. Mersin University School of Medicine, Mersin, Turkey
29. Institute of Psychiatry, HCFMUSP, Sao Paulo, Brazil
30. Headache Unit, Neurology Department, Hospital Universitari Vall d’Hebron and Headache & Neurological Pain Research Group, Vall d’Hebron Institute of Research, Barcelona, Spain
31. Vita Medical Center, Kyiv, Ukraine
32. Department of Neurology, Mayo Clinic, Phoenix, AZ, USA
33. Hospital das Clínicas da Universidade de São Paulo, São Paulo, Brazil
34. Department of Neurology, Keio University School of Medicine, Tokyo, Japan
35. Department of Neurology, Leiden University Medical Center, Leiden, The Netherlands
36. Neurology ward, Sina Hospital, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
37. Headache department, Iranian Center of Neurological Research, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
38. Department of Neurology, Ghent University Hospital, Ghent, Belgium
39. Department of Neurology, AZ Sint-Jan Brugge, Bruges, Belgium
40. College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
41. Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
42. Department of Neurology, Chinese PLA General Hospital, Beijing, China
43. Department of Brain and Behavioral Science, University of Pavia, Pavia, Italy