[1] Inselspital Bern Univ Hosp, Dept Neurol, Bern, Switzerland
[2] Univ Bern, Grad Sch Hlth Sci, Bern, Switzerland
[3] Onze Lieve Vrouwziekenhuis Campus Aalst Aalst, Dept Neurol, Oost Vlaanderen, Belgium
[4] Inselspital Bern Univ Hosp, Univ Inst Diagnost & Intervent Neuroradiol, Bern, Switzerland
[5] Univ Bern, Bern, Switzerland
[6] Inselspital Bern Univ Hosp, Dept Neurosurg, Bern, Switzerland
[7] Univ Hosp Basel, Dept Neurol, Basel, Switzerland