1. Department of Neurology, Keio University School of Medicine, Tokyo, Japan
2. Neurology Department, Japanese Red Cross Ashikaga Hospital, Ashikaga, Japan
3. Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome Polo Pontino ICOT, Latina, Italy
4. Department of Neurology, Cairo University, Cairo, Egypt
5. Department of Neurology, Gaziantep City Hospital, Gaziantep, Türkiye
6. Department of Neurology and Clinical Genetics, Kyrgyz State Medical Academy, Bishkek, Kyrgyzstan
7. Department of Neurology, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Korea
8. Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei
9. Neurological Institute, Taipei Veterans General Hospital, Taipei
10. Department of Neurology, Tallaght University Hospital / The Adelaide and Meath Hospital, Dublin, incorporating the National Children's Hospital (AMNCH), Dublin, Ireland
11. Department of Neurology, Inje University Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Gyeonggi-do, Korea
12. Faculty of Medicine, Department of Neurology, Duzce University, Duzce, Turkiye
13. Neurology Center, Neurology and Psychiatric Clinic, West-Tallinn Central Hospital, Tallinn, Estonia
14. Department of Neurology, Danish Headache Center, Copenhagen University Hospital – Rigshospitalet, Copenhagen, Denmark
15. Department of Biophysics, Biomedicine, and Neuroscience, Al-Farabi Kazakh National University, Almaty, Kazakhstan
16. Headache & Craniofacial Pain Clinic, Department of Neurology, Vall d’Hebron University Hospital, Barcelona, Spain
17. Headache Research Group, Vall d’Hebron Institute of Research, Departament de Medicina, Universitat Autonoma de Barcelona, Barcelona, Spain
18. Department of Neurology, Mayo Clinic, Phoenix, Arizona, USA