1. Department of Psychosomatics and Psychotherapy; University Hospital Münster; Münster; Germany
2. Department of Clinical Radiology; University Hospital Münster; Münster; Germany
3. Department of Neurology; University Hospital Erlangen; Erlangen; Germany
4. Interdisciplinary Diagnostics and Therapy; University Hospital Münster; Münster; Germany
5. Clinic for Laryngology, Rhinology and Otology; Hannover Medical School; Hannover; Germany
6. Department of Anesthesiology and Intensive Care; University Hospital Münster; Münster; Germany