Allogeneic Hematopoietic Stem Cell Transplantation for Primary Refractory Acute Lymphoblastic Leukemia - a Report from the Acute Leukemia Working Party of the EBMT - Pavlu, J; Labopin, M; Tischer, J; Sakellari, I; Stelljes, M; Finke, J; Fanin, R; Stuhler, G; Afanasyev, BV; Bloor, A; Anagnostopoulos, A; Mohty, M; et al. (AMER SOC HEMATOLOGY, 2016)