Nonmyeloablative Allogeneic Hematopoietic Stem Cell Transplant for the Treatment of Patients with Hematologic Malignancies Using Busulfan, Fludarabine, and Total Body Irradiation Conditioning Is Effective in an Elderly and Infirm PopulationJonathan E. Brammer, Richard T. Maziarz, James Gajewski et al.|Transplantation and Cellular Therapy|2014Cited by 11