1. Department of Neurosurgery, Vrije Universiteit Brussel, Laarbeeklaan 101, 1090 Jette, Belgium
2. Department of Neurology, Universiteit Antwerpen, Universiteitsplein 1, 2610 Antwerpen, Belgium
3. Department of Pathology, Universitair Ziekenhuis Brussel, Laarbeeklaan 101, 1090 Jette, Belgium
4. Experimental Pathology Research Group, Vrije Universiteit Brussel, Laarbeeklaan 103, 1090 Jette, Belgium
5. Department of Pathology, Indiana University-Purdue University, 420 University Blvd, Indianapolis, IN 46202, USA
6. Neurosurgery Section, Gesundheitsverbund Landkreis Konstanz (GLKN), 78224 Singen am Hohentwiel, Germany