Milne P, Wilhelm-Benartzi C, Grunwald MR, Bigley V, Dillon R, Freeman SD, Gallagher K, Publicover A, Pagan S, Marr H, et al. Serum Flt3 ligand is a biomarker of progenitor cell mass and prognosis in acute myeloid leukemia. Blood Adv. 2019;3(20):3052-3061.