PL Zinzani, M Bendandi, M Magagnoli, P Albertini, D Rondelli, V Stefoni, M Tani, and S Tura. 2000. “Long-Term Follow-up After Fludarabine Treatment in Pretreated Patients With Chronic Lymphocytic Leukemia”. Haematologica 85 (11). Pavia, Italy, 1135-39. https://haematologica.org/article/view/1859.