1. Embryology and Stem Cell Biology, Department of Biomedicine University of Basel, Basel, Switzerland
2. Department of Molecular Embryology Max Planck Institute of Immunobiology, Freiburg, Germany
3. Department of Neurological Surgery University of California San Francisco, San Francisco, California, USA
4. Institut für Hirnforschung Universität Zürich, Zürich, Switzerland
5. Division of Neuropathology Institute of Pathology University of Basel, Basel, Switzerland