Allogeneic Stem Cell Transplantation for Patients with Acute Myelogenous Leukemia (AML) in Second Complete Remission (CR2) Transplanted from Unrelated Donors with Post Transplant Cyclophosphamide (PTCy). a Study on Behalf of the Acute Leukemia Working Party of the European Society for Blood and Marrow Transplantation | Publicación