1. Department of Neurological Surgery, Karolinska Institutet, Stockholm, Sweden;
2. Centrum för Traumaforskning, Karolinska Institutet, Stockholm, Sweden;
3. Department of Neurological Surgery, Barrow Neurological Institute, Phoenix, AZ, USA;
4. Department of Neurological Surgery, University of California, San Francisco, CA, USA;
5. Department of Neurological Surgery, Baylor College of Medicine, Houston, TX, USA;
6. Emeritus Professor and Chairman of Neurosurgery, Distinguished Faculty of Neurological Surgery, Department of Neurosurgery, University Hospital Zurich, Zurich, Switzerland