1 Department of Neurosurgery, Western General Hospital, Edinburgh EH4 2XU, UK. Electronic address: [email protected].
2 Klinik für Neurochirurgie, Universitätsmedizin Göttingen, Göttingen, Germany.
3 Iuliu Hatieganu University of Medicine and Pharmacy Cluj-Napoca, Cluj-Napoca, Romania; Department of Neurosurgery, Cluj County Emergency Hospital, Cluj-Napoca, Romania.
4 Department of Neurosurgery, Hospital Universitario La Paz, Madrid, Spain.
5 Department of Neurosurgery, Haaglanden Medical Center, The Hague, Netherlands; Department of Neurosurgery, Leiden University Medical Center, Leiden, Netherlands; Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
6 Department of Neurosurgery, Geneva University Medical Center and Faculty of Medicine, 1205 Geneva, Switzerland.