1. ARTORG Center for Biomedical Engineering Research, University of Bern, Bern, Switzerland.
2. Department of Otorhinolaryngology, Head and Neck Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
3. Institute for Surgical Technologies and Biomechanics, University of Bern, Bern, Switzerland.
4. Department Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
5. Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.