1. Department of Neurology, Biostatistics and HTA, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands.
2. Department of Neurosurgery, Biostatistics and HTA, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands.
3. Department of Radiology, Biostatistics and HTA, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands.
4. Department of Neurology, University of Texas, Southwestern Medical Center, Dallas, Texas.
5. Department of Epidemiology, Biostatistics and HTA, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands.