1 Division of Neurosurgery, Geneva University Hospitals, Geneva Neuroscience Center, Faculty of Medicine, University of Geneva, Geneva, Switzerland; Department of Neurosurgery, Charité-Universitätsmedizin Berlin, Berlin, Germany. Electronic address: [email protected].
2 Gippsland Medical School, Monash University and Department of Surgery, Frankston Hospital, Frankston, Victoria, Australia.
3 Department of Neurosurgery, University of Heidelberg, Heidelberg, Germany.