About the Authors
Functional Genomics Unit, CIC bioGUNE, Derio, Spain
Centro Andaluz de Biología del Desarrollo (CSIC-UPO), Universidad Pablo de Olavide, Sevilla, Spain
The authors have declared that no competing interests exist.
Conceived and designed the experiments: SFS DG. Performed the experiments: SFS. Analyzed the data: SFS. Contributed reagents/materials/analysis tools: JC. Wrote the paper: SFS DG.