Källström, J., Niinimäki, R., Fredlund, J., Vogt, H., Korhonen, L. S., Castor, A., Schmiegelow, K., Thastrup, M. and Ek, T. (2026) “Allopurinol increases DNA-thioguanine nucleotides during maintenance therapy in pediatric acute lymphoblastic leukemia”, Haematologica. Pavia, Italy, 111(5), pp. 1835-1839. doi: 10.3324/haematol.2025.288872.