P Tosi, A Pellacani, PL Zinzani, M Magagnoli, G Visani and S Tura (1999) “In vitro study of the combination gemcitabine + fludarabine on freshly isolated chronic lymphocytic leukemia cells”, Haematologica. Pavia, Italy, 84(9), pp. 794-798. Available at: https://haematologica.org/article/view/1472 (Accessed: 27October2026).