1. Department of Neurosurgery, Inselspital Bern University Hospital, and University of Bern Bern Switzerland
2. Department of Neurosurgery Medical Center – University of Freiburg Freiburg Germany
3. University Institute of Clinical Chemistry, Inselspital Bern University Hospital, and University of Bern Bern Switzerland
4. Institute of Diagnostic and Interventional Neuroradiology, Inselspital Bern University Hospital, and University of Bern Bern Switzerland