Swimmers plot. Duration of patients’ response following Bv and Bs salvage treatment. Horizontal arrows denote ongoing response. Arrowheads (▾) denote radiation therapy. Circles (●) denote autologous HSCT. Rhombuses (♦) denote allogeneic HSCT. Squares (▪) denote 2 additional Bv+Bs courses. PR, partial remission; REF, refractory; REL, relapse.