1. Department of Neurology, Rigshospitalet‐Glostrup, Danish Headache Center, Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
2. Department of Neurology Semmelweis University Budapest Hungary
3. Department of Diagnostics, Rigshospitalet‐Glostrup, Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
4. Department of Pharmacodynamics Semmelweis University Budapest Hungary