About the Authors
Karlsruhe Institute of Technology (KIT), Institute of Toxicology and Genetics (ITG), Karlsruhe, Germany
MRC Centre of Developmental Neurobiology, King's College London, United Kingdom
The authors have declared that no competing interests exist.
The author(s) have made the following declarations about their contributions: Conceived and designed the experiments: DP AL SS. Performed the experiments: DP SW SS. Analyzed the data: DP SS. Contributed reagents/materials/analysis tools: DP SW SS. Wrote the paper: AL SS.