1. Headache Group, Wolfson SPaRC, Institute of Psychiatry, Psychology and 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, Beth Israel Deaconess Medical Center, Boston, USA
7. Department of Anesthesia, Critical Care and Pain Medicine, Harvard Medical School and 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. Department of Neurology, Hospital Universitario Rio Hortega, University of 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. Wolfson Sensory, Pain and Regeneration Centre, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
23. Royal North Shore Hospital, St Leonards, Sydney, Australia
24. Department of Neurology, Klinikum der Universitat Munchen, Munich, Germany
25. Department of Neurology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
26. Neurological Institute, Taipei Veterans General Hospital, Taipei
27. College of Medicine, National Yang Ming Chiao Tung University, Taipei
28. Instituto de Investigación Médica Mercedes y Martin Ferreyra (INIMEC), Consejo Nacional de Investigaciones Cientificas y Técnicas (CONICET), Universidad Nacional de Córdoba, Córdoba, Argentina
29. IRCCS Mondino Foundation, Headache Science and Rehabilitation Unit, Pavia, Italy
30. Department of Neurology, Mersin University School of Medicine, Mersin, Turkey
31. Institute of Psychiatry, HCFMUSP, Sao Paulo, Brazil
32. Headache Unit, Neurology Department, Hospital Universitari Vall d’Hebron & Headache & Neurological Pain Research Group, Vall d’Hebron Institute of Research, Barcelona, Spain
33. Vita Medical Center, Kyiv, Ukraine
34. Department of Neurology, Mayo Clinic, Phoenix, USA
35. Hospital das Clínicas da Universidade de São Paulo, São Paulo, Brazil
36. Department of Neurology, Keio University School of Medicine, Tokyo, Japan
37. Department of Neurology, Leiden University Medical Center, Leiden, The Netherlands
38. Neurology ward, Sina Hospital, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
39. Headache department, Iranian Center of Neurological Research, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
40. Department of Neurology, Ghent University Hospital, Ghent, Belgium
41. Department of Neurology, AZ Sint-Jan Brugge, Bruges, Belgium
42. Brain Research Center, National Yang Ming Chiao Tung University,
Taipei
43. Department of Neurology, Chinese PLA General Hospital, Beijing,
China
44. Department of Brain and Behavioral Science, University of Pavia, Pavia, Italy