1. Institute of Medical Psychology & Behavioral Immunobiology; University Hospital of Essen, University of Duisburg-Essen; Essen; Germany
2. Institute of Medical Psychology; University Medical Center Hamburg-Eppendorf; Hamburg; Germany
3. Neuroimage Nord; Department of Neurology; University Medical Center Hamburg-Eppendorf; Hamburg; Germany
4. Institute of Diagnostic and Interventional Radiology and Neuroradiology; University Hospital of Essen, University of Duisburg-Essen; Essen; Germany
5. Department of Neuroradiology; Centre for Radiology; University Clinic of Gießen and Marburg, Justus-Liebig-University Gießen; Gießen; Germany