[1] NTNU Norwegian University of Science and Technology,Department of Neuromedicine and Movement Science
[2] Imperial College London,Division of Brain Sciences
[3] University of Copenhagen,Danish Headache Centre, Department of Neurology
[4] Evangelical Hospital Unna,Department of Neurology
[5] University of Duisburg-Essen,Norwegian Advisory Unit on Headache, Department of Neurology and Clinical Neurophysiology
[6] EVEX Medical Corporation,Neurology Department, Cerrahpaşa School of Medicine
[7] IM Sechenov First Moscow State Medical University (Sechenov University),Community Medicine and Public Health Department
[8] St Olavs University Hospital,Department of Neurosciences
[9] Istanbul University,Headache Clinic, Neurology Clinic
[10] Cadi Ayyad University School of Medicine,Weill Cornell Medicine Headache Program, Department of Neurology
[11] King Fahad Medical City,Department of Neurology
[12] MOH,Headache Centre, Neurology Department
[13] King Saud Bin Abdulaziz University for Health Sciences,Faculty of Pharmaceutical Sciences, School of Health Sciences
[14] King Abdulaziz Medical City,Department of Anesthesiology, Medical College of Georgia
[15] Tartu University Hospital,Department of Paediatrics
[16] Weill Cornell Medical College,Laboratory of Clinical and Experimental Neuroscience, Faculty of Medicine
[17] Centralsjukhuset,Department of Neurology
[18] Hospital da Luz,Department of Neurology
[19] Hospital de Sant Joan Despí Moisès Broggi,Department of Neurology and Neurosurgery
[20] University of Iceland,Neurology, Public Health, Disability Unit
[21] Augusta University,Department of Neurology
[22] University Teaching Hospital,Faculty of Medicine
[23] Université Cadi Ayyad Marrakech,Department of Neurology
[24] University Teaching Hospital Mohammed VI,1st Neurology Department, Aeginition Hospital, Medical School
[25] National Institute of Mental Health and Neurosciences (NIMHANS),Chief of Department of Health Organization
[26] The Ural State Medical University,Department of Neurology
[27] International Headache Centre “Europe-Asia”,Institute of Psychiatry, University of São Paulo
[28] Fondazione IRCCS Istituto Neurologico Carlo Besta,Department of Neurology
[29] Tjörn Headache Clinic,Department of Epidemiology
[30] Mongolian National University of Medical Sciences,Department of Psychiatry
[31] University of Technical Sciences and Technologies,Dhulikhel Hospital
[32] University Hospital of Neurology and Psychiatry “St Naum”,Department of Neurology
[33] Medical University Sofia,Department of Internal Medicine
[34] National and Kapodistrian University of Athens,Neurology Ward, Sina Hospital, School of Medicine
[35] Ministry of Health,Headache Department, Iranian Center of Neurological Researches, Institute of Neuroscience
[36] Moscow Research Clinical Centre for Neuropsychiatry,International Headache Centre, Department of Neurology
[37] University Headache Clinic,Department of Neurology, School of Medicine, College of Health Sciences
[38] Ghent University Hospital,Neurology Clinic
[39] Hospital Albert Einstein,Care Policy and Evaluation Centre
[40] Hospital Luis Negreiros Vega,undefined
[41] National Institute of Mental Health and Neurosciences (NIMHANS),undefined
[42] Kathmandu University School of Medical Sciences (KUSMS),undefined
[43] Kathmandu University Hospital,undefined
[44] European Migraine and Headache Alliance,undefined
[45] Johns Hopkins University School of Medicine,undefined
[46] University Teaching Hospital,undefined
[47] Tehran University of Medical Sciences,undefined
[48] Tehran University of Medical Sciences,undefined
[49] Chinese PLA General Hospital,undefined
[50] Addis Ababa University,undefined