1. Department of Psychosomatic Medicine and Psychotherapy, LWL-University Hospital, Ruhr-University Bochum, Bochum, Germany
2. Department of Neuropsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr-University Bochum, Bochum, Germany
3. Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
4. Department of Medical Informatics, Biometry and Epidemiology, Ruhr-University Bochum, Bochum, Germany
5. Department of Psychosomatic Medicine and Psychotherapy, Campus Fulda, University of Marburg, Fulda, Germany