Affiliation: | 1. Department of Neurology and Neurosurgery, the Urals State Medical University, Yekaterinburg, Russia;2. International Headache Center “Europe‐Asia”, Yekaterinburg, Russia;3. Department of Neurosurgery, Regional Neurosurgical Center, City Hospital No. 40, Yekaterinburg, Russia;4. Danish Headache Center, Department of Neurology, Glostrup Hospital, University of Copenhagen, Copenhagen, Denmark |