1. Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology , Carrer Baldiri Reixac 10, 08028 Barcelona , Spain
2. Developmental Tumor Biology Laboratory, Institut de Recerca Sant Joan de Déu , Esplugues de Llobregat 08950 Barcelona , Spain
3. Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology , 08003 Barcelona , Spain
4. Universitat Pompeu Fabra (UPF) , 08002 Barcelona , Spain
5. Institucio Catalana de Recerca i Estudis Avançats (ICREA) , Pg Lluis Companys 23, 08010 Barcelona , Spain
6. Pediatric Cancer Center Barcelona (PCCB), Hospital Sant Joan de Déu , Esplugues de Llobregat, 08950 Barcelona , Spain