SARAVIA-BARTRA, María M.; CAZORLA, Pedro; IGNACIO-CCONCHOY, Felipe L.  and  CAZORLA-SARAVIA, Patrick. Exclusive breastfeeding as a protective factor of acute lymphoblastic leukemia. Andes pediatr. [online]. 2021, vol.92, n.1, pp.34-41.  Epub Feb 22, 2021. ISSN 2452-6053.