Buyse M, Michiels S, Squifflet P, Lucchesi KJ, Hellstrand K, Brune ML, Castaigne S, Rowe JM. Leukemia-free survival as a surrogate end point for overall survival in the evaluation of maintenance therapy for patients with acute myeloid leukemia in complete remission. Haematologica 2011; 96(8):1106-1112; https://doi.org/10.3324/haematol.2010.039131.