1. Department of Psychosomatics and Psychotherapy; University Hospital Münster; Münster Germany
2. Department of Neurology; Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil, Ruhr Universität Bochum; Bochum Germany
3. Department of Clinical Radiology; University Hospital Münster; Münster Germany
4. Institute of Neuroscience and Medicine (INM-1), Research Center Jülich; Germany
5. Institute of Clinical Neuroscience and Medical Psychology, Heinrich-Heine University; Düsseldorf Germany
6. Department of Anesthesiology; Pain Medicine, University Hospital Göttingen; Göttingen Germany
7. Department of Anesthesiology; Chronic Pain and Fatigue Research, University of Michigan; Michigan
8. Research Institute of Health Sciences, University of Balearic Islands; Palma Spain