| Institution: | 1. Department of Neurology, University of California, , San Francisco, CA, USA;2. Headache Group, NIHR‐Wellcome Trust Clinical Research Facility, King's College London, , London, UK;3. Department of Neurology, University of Munich Hospital – Gro?hadern, , Munich, Germany;4. Department of Neurology, The Royal London Hospital (Barts and the London NHS Trust), , London, UK;5. Basildon and Thurrock University Hospitals NHS Foundation Trust, , Nethermayne, UK;6. Department of Neurology, University Hospital Basel, , Basel, Switzerland;7. Division of Neuroradiology, University Hospital Basel, , Basel, Switzerland |
