1. Department of Molecular Physiology, University of Saarland, Homburg, Germany.
2. Department of Neurogenetics, Max Planck Institute of Experimental Medicine, Göttingen, Germany.
3. Fachbereich Biologie, Technische Universität Kaiserslautern, Kaiserslautern, Germany.
4. Department of Neuroscience, Erasmus MC, Rotterdam, Netherlands.
5. Department of Physiology, Ludwig-Maximilians University, Munich, Germany.
6. Institute for Stem Cell Research, Helmholtz Center Munich, Neuherberg, Germany.
7. Department of Clinical Neurobiology at the German Cancer Research Center and the Medical Faculty of the Heidelberg University, Heidelberg, Germany.
8. Department of Molecular Neurobiology, Max Planck Institute of Medical Research, Heidelberg, Germany.
9. Department of Otolaryngology, University of Pittsburgh, Pittsburgh, PA, USA.
10. Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences (KNAW), Amsterdam, Netherlands.