1. Department of Neurosurgery, University Hospital Würzburg, Würzburg, Germany
2. Department of Biobehavioral Sciences, Teachers College, Columbia University, New York, New York, USA
3. Department of Neurosurgery, Christian Doppler Klinik, Paracelsus Medical University, Salzburg, Austria
4. Research Institute of Neurointervention, Paracelsus Medical University, Salzburg, Austria