[1] Katholieke Univ Leuven, Dept Neurosci, Expt Otorhinolaryngol, Leuven, Belgium
[2] UZ Leuven, Dept Neurol, Leuven, Belgium
[3] Katholieke Univ Leuven, Dept Neurosci, Expt Neurosurg & Neuroanat, Leuven, Belgium
[4] UZ Leuven, Dept Radiol, Leuven, Belgium
[5] Katholieke Univ Leuven, Dept Neurosci, Lab Parkinson Res, Leuven, Belgium
[6] UZ Leuven, Dept Neurosurg, Leuven, Belgium