1. Department of Medical Psychology and Medical Sociology; Faculty of Medicine; Ruhr University of Bochum; Germany
2. Pain Imaging Neuroscience Group; Nuffield Department of Clinical Neurosciences & FMRIB Centre; John Radcliffe Hospital, University of Oxford; UK
3. Department of Radiology, St. Josef Hospital; University Hospital of Bochum; Germany
4. Deptartment of Neurology; St. Mauritius Therapieklinik; Meerbusch Germany