1. Neurobiology Research Unit, Rigshospitalet Blegdamsvej, 2100 Copenhagen, Denmark
2. Functional Imaging Unit, Department of Clinical Physiology, Nuclear Medicine and PET, Rigshospitalet Glostrup, 2600 Copenhagen, Denmark
3. Department of Neurosurgery, Rigshospitalet Blegdamsvej, 2100 Copenhagen, Denmark
4. Department of Radiology, Rigshospitalet Blegdamsvej, 2100 Copenhagen, Denmark
5. Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark