| Affiliation: | 1. Department of Clinical Physiology and Nuclear Medicine, Frederiksberg and Bispebjerg Hospital, University of Copenhagen, Frederiksberg, Denmark;2. Danish Headache Center, Department of Neurology, Glostrup Hospital, University of Copenhagen, Glostrup, Denmark;3. Department of Clinical Physiology, Glostrup Hospital, University of Copenhagen, Glostrup, Denmark;4. Danish Center for Sleep Medicine, Department of Neurophysiology, Glostrup Hospital, University of Copenhagen, Glostrup, Denmark |
