1. Division of Experimental Neurosurgery and Neuroanatomy, Leuven, Leuven, Belgium.
2. Biomechanics and Engineering Design Section, Katholieke Universiteit Leuven, Leuven, Belgium.
3. Department of Metallurgy and Materials Engineering, Katholieke Universiteit Leuven, Leuven, Belgium.
4. Division M3-BIORES, Katholieke Universiteit Leuven, Leuven, Belgium.