1. Department of Psychiatry and Psychotherapy, University of Regensburg, 93049 Regensburg, Germany
2. Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
3. Department of Neurology, Catholic University of Valencia, 46010 Valencia, Spain
4. Department of Psychiatry, Psychosomatics and Psychotherapy, Kbo-Lech-Mangfall-Klinik Agatharied, 83734 Hausham, Germany