1. Unit of Clinical Genetics and Functional Genomics, Departments of Pharmacology-Physiology and Pediatrics, Medical School; University of Zaragoza; Zaragoza Spain
2. Service of Pediatrics; Hospital Clínico Universitario “Lozano Blesa”; Zaragoza Spain
3. Chromosome Dynamics Group, Molecular Oncology Programme; Spanish National Cancer Research Center (CNIO); Madrid Spain
4. Cell Cycle Group, Cancer Epigenetics and Biology Program (PEBC); Institut d'Investigacions Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat; Barcelona Spain
5. Department of Molecular Genetics; Hospital Universitario “Miguel Servet”; Zaragoza Spain
6. Department of Genetics; Fundación Jiménez Díaz; Madrid Spain