1 Department of Neuroanatomy, Faculty of Medicine, Université de Liège, Liège, Belgium; Department of Neurosurgery, Faculty of Medicine, Université de Liège, Liège, Belgium. Electronic address: felix.scholtes@uliege.be.
2 Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital of the University of Zürich, Zürich, Switzerland; Department of Consultation-Liaison-Psychiatry and Psychosomatic Medicine, University Hospital, Zürich, University of Zürich, Zürich, Switzerland.
3 Department of Social Sciences, University of Luxembourg, Esch-sur-Alzette, Luxembourg.
4 Department of Neurosurgery, Faculty of Medicine, Université de Liège, Liège, Belgium.
5 Department of Neurosurgery, Cantonal Hospital St. Gallen, St. Gallen, Switzerland.
6 Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric Hospital of the University of Zürich, Zürich, Switzerland.