POLATUZUMAB VEDOTIN (POLA) + OBINUTUZUMAB (G) + LENALIDOMIDE (LEN) IN PATIENTS (PTS) WITH RELAPSED/REFRACTORY (R/R) FOLLICULAR LYMPHOMA (FL): PHASE IB/II INTERIM ANALYSIS. (12th June 2019) - Diefenbach, C.; Kahl, B.; Banerjee, L.; McMillan, A.; Ramchandren, R.; Miall, F.; Briones, J.; Cordoba, R.; Gonzalez‐Barca, E.; Panizo, C.; Hirata, J.; Chang, N.; et al.