1. Neurosurgery Division, Department of Clinical Neurosciences, Faculty of Medicine, Geneva University Medical Center, Geneva;
2. Department of Pathology and Immunology, University of Geneva, Faculty of Medicine, Geneva;
3. Institute of Applied Simulation, University of Applied Sciences, Wädenswil, Zürich; and
4. Neuroradiologie, SwissNeuroInstitute, Klinik Hirslanden, Zürich, Switzerland