1. Pathology Service Hospital de Pediatría JP Garrahan Buenos Aires Argentina
2. National Scientific and Technical Research Council CONICET Buenos Aires Argentina
3. SJD Pediatric Cancer Center Barcelona Hospital Sant Joan de Deu Barcelona Spain
4. Institut de Recerca Sant Joan de Deu Barcelona Spain
5. Instituto de Investigaciones en Medicina Traslacional ‐ Universidad Austral Buenos Aires Argentina
6. Pathology Service Hospital Sant Joan de Deu Barcelona Spain
7. SIREDO Center Institut Curie and University Paris Cité Paris France
8. Unidad de tratamientos innovadores Hospital de Pediatría JP Garrahan Buenos Aires Argentina
9. Hematology‐Oncology Service Hospital de Pediatría JP Garrahan Buenos Aires Argentina
10. Department of Pediatric Oncology Clinical Division National Institute of Cancer Rio de Janeiro Brazil
11. Department of Pediatric Oncology Hospital del Niño Manuel A. Villarroel Cochabamba Bolivia
12. Ophthalmic Oncology Service Memorial Sloan‐Kettering Cancer Center New York New York USA
13. Laboratory of Molecular and Cellular Therapy Instituto Leloir‐Instituto de Investigaciones Bioquímicas de Buenos Aires (IIBBA) Buenos Aires Argentina
14. Hematology Oncology Service Hospital Pereyra Rossell Montevideo Uruguay