About the Authors

Christian Fung

Contributed equally to this work with: Christian Fung, Michael Murek

Affiliations Department of Neurosurgery, University Hospital Bern, Bern, Switzerland, Department of Neurosurgery, University Hospital Geneva, Geneva, Switzerland

Michael Murek

Contributed equally to this work with: Christian Fung, Michael Murek

Affiliation Department of Neurosurgery, University Hospital Bern, Bern, Switzerland

Pascal P. Klinger-Gratz

Affiliation Institute for Diagnostic and Interventional Neuroradiology, University Hospital Bern, Bern, Switzerland

Michael Fiechter

Affiliation Department of Neurosurgery, University Hospital Bern, Bern, Switzerland

Werner J. Z’Graggen

Affiliation Department of Neurosurgery, University Hospital Bern, Bern, Switzerland

Oliver P. Gautschi

Affiliation Department of Neurosurgery, University Hospital Geneva, Geneva, Switzerland

Marwan El-Koussy

Affiliation Institute for Diagnostic and Interventional Neuroradiology, University Hospital Bern, Bern, Switzerland

Jan Gralla

Affiliation Institute for Diagnostic and Interventional Neuroradiology, University Hospital Bern, Bern, Switzerland

Karl Schaller

Affiliation Department of Neurosurgery, University Hospital Geneva, Geneva, Switzerland

Martin Zbinden

Affiliation Institute for Diagnostic and Interventional Neuroradiology, University Hospital Bern, Bern, Switzerland

Marcel Arnold

Affiliation Department of Neurology, University Hospital Bern, Bern, Switzerland

Urs Fischer

Affiliation Department of Neurology, University Hospital Bern, Bern, Switzerland

Heinrich P. Mattle

Affiliation Department of Neurology, University Hospital Bern, Bern, Switzerland

Andreas Raabe

Affiliation Department of Neurosurgery, University Hospital Bern, Bern, Switzerland

Jürgen Beck

Juergen.beck@insel.ch

Affiliation Department of Neurosurgery, University Hospital Bern, Bern, Switzerland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CF JB. Performed the experiments: CF PKG MF MZ JG HM WZ OG MA. Analyzed the data: CF JB MM MZ MEK HM UF. Wrote the paper: CF JB. Statistical analysis: MM. Financial and institutional support: AR KS.