1. Institute of Epidemiology and Social Medicine; University of Muenster; Muenster Germany
2. Discipline of Psychiatry; School of Medicine; University of Adelaide; Adelaide South Australia Australia
3. Department of Neuroradiology; Zentralklinikum Augsburg; Augsburg Germany
4. Department of Neurology; Zentralklinikum Augsburg; Augsburg Germany
5. Paracelsus Elena-Klinik; Kassel Germany