Antonella Vitale, Sara Grammatico, Saveria Capria, Carina Fiocchi, Robin Foà, Giovanna Meloni. Advanced Philadelphia chromosome positive acute lymphoblastic leukemia patients relapsed after treatment with tyrosine-kinase inhibitors: successful response to clofarabine and cyclophosphamide. Haematologica 2009;94(10):1471-1473; https://doi.org/10.3324/haematol.2009.011718.