1. Division of Neurosurgery, Prince of Wales Hospital, the Chinese University of Hong Kong, Hong Kong, China.
2. Department of Neurology, Slingeland Ziekenhuis, Doetinchem, the Netherlands.
3. Department of Clinical Neurosciences, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania.
4. idv-Data Analysis and Study Planning, Department of Biometry and Clinical Research, Krailling, Germany.
5. Medical Faculty of the Westphalia Wilhelm's-University, Münster, Germany.
6. SHR Gesundheitszentrum Bad Wimpfen, Wad Wimpfen, Germany.
7. Department of Neurosurgery, National Neuroscience Institute, Singapore.
8. Laboratory of Neuropsychology, the University of Hong Kong, Hong Kong, China.
9. Department of Neurosurgery, Medical University of Vienna, Vienna, Austria.