1. Department of Medical Psychology and Medical Sociology, Ruhr University Bochum , Bochum , Germany
2. Department of Neurology, Center for Translational Neuro- and Behavioral Sciences , University Hospital Essen, University of Duisburg-Essen, Essen , Germany
3. Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, University of Duisburg-Essen , Essen , Germany
4. Department for Internal and Integrative Medicine, Sozialstiftung Bamberg , Bamberg , Germany
5. Department for Integrative Medicine, Medical Faculty, University of Duisburg-Essen , Essen , Germany
6. Institute of Medical Psychology and Behavioral Immunobiology, Center for Translational Neuro- and Behavioral Sciences, University Hospital Essen, University of Duisburg-Essen, Essen , Germany