JJ Ortega, JM Ribera, A Oriol, P Bastida, ME Gonzalez, C Calvo, I Egurbide, JM Hernandez Rivas, C Rivas, A Alcala, J Besalduch, J Macia, S Gardella, M Carnero, JM Lite, F Casanova, M Martinez, M Fontanillas, E Feliu, JF San Miguel, and PETHEMA Group, Spanish Society of Hematology. Programa para el Estudio y Tratamiento de las Hemopatias Malignas. 2001. “Early and Delayed Consolidation Chemotherapy Significantly Improves the Outcome of Children With Intermediate Risk Acute Lymphoblastic Leukemia. Final Results of the Prospective Randomized PETHEMA ALL-89 TRIAL”. Haematologica 86 (6). Pavia, Italy, 586-95. https://doi.org/10.3324/%x.