NCT00392691 2019-05-15Melphalan, Yttrium Y 90 Ibritumomab Tiuxetan, and Rituximab Followed by Autologous Stem Cell Transplant in Treating Older Patients With Non-Hodgkin's Lymphoma That Has Relapsed or Not Responded to Previous TreatmentSwiss Cancer InstitutePhase 1 Completed20 enrolled