Authors
Engelbert Knosp
Department of Neurosurgery, Medical University of Vienna,, Vienna, Austria
Andreas Gruber
andreas.gruber@meduniwien.ac.at
Department of Neurosurgery, Medical University of Vienna,, Vienna, Austria
andreas.gruber@meduniwien.ac.at
© 2017 Engelbert Knosp, Andreas Gruber, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.