High-dose therapy autotransplantation/intensification vs continued standard chemotherapy in multiple myeloma in first remission. Results of a non-randomized study from a single institution. - Bladé, J; Esteve, J; Rives, S; Martínez, C; Rovira, M; Urbano-Ispizua, A; Marín, P; Carreras, E; Montserrat, E (Bone Marrow Transplantation, 2000)