1. Laboratory of Molecular Neurosurgery, Department of Stereotactic and Functional Neurosurgery, Neurocenter, University of Freiburg, Freiburg, Germany.
2. Department of General Neurosurgery, Neurocenter, University of Freiburg, Freiburg, Germany.
3. Burnham Institute for Medical Research, Stem Cell and Regeneration Program, La Jolla, California.
4. The Brain Research Group, School of Biosciences, University of Cardiff, Cardiff, United Kingdom.