P18: DARATUMUMAB (D) PLUS BORTEZOMIB (V) AND DEXAMETHASONE (D) AS SALVAGE THERAPY FOR PATIENTS WITH REFRACTORY/RELAPSED MULTIPLE MYELOMA (RRMM): INITIAL FOLLOW-UP OF AN ITALIAN MULTICENTER RETROSPECTIVE CLINICAL EXPERIENCE BY "RETE EMATOLOGICA PUGLIESE". (5th April 2022) - Mele, G; Cascavilla, N; Di Renzo, N; Guarini, A; Mazza, P; Melillo, L; Pavone, V; Tarantini, G; Curci, P; Falcone, AP; Germano, C; Mele, A; et al.