1. Developmental Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
2. EMBL-European Bioinformatics Institute (EMBL-EBI), Wellcome Genome Campus, Cambridge, United Kingdom
3. Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, United Kingdom
4. Genomics Core Facility, European Molecular Biology Laboratory, Heidelberg, Germany
5. Wellcome Trust Sanger Institute, Wellcome Genome Campus, Cambridge, United Kingdom
6. Centre for Organismal Studies, University of Heidelberg, Heidelberg, Germany