1. Clinic of Cranio-Maxillofacial and Oral Surgery, Center of Dental Medicine, University of Zurich, Zurich, Switzerland.
2. Department of Neuroradiology, Clinical Neuroscience Center, University Hospital of Zurich, University of Zurich, Zurich, Switzerland.
3. Department of Cranio-Maxillo-Facial and Oral Surgery, University Hospital of Zurich, University of Zurich, Zurich, Switzerland.