S206: OBINUTUZUMAB PLUS CHEMOTHERAPY DEMONSTRATES LONG-TERM BENEFIT OVER RITUXIMAB PLUS CHEMOTHERAPY IN PATIENTS WITH PREVIOUSLY UNTREATED FOLLICULAR LYMPHOMA: FINAL ANALYSIS OF TH... oleh W. Townsend, W. Hiddemann, C. Buske, G. Cartron, D. Cunningham, M. J. Dyer, J. Gribben, E. Phillips, M. Dreyling, J. F. Seymour, A. Grigg, T.-Y. Lin, X.-N. Hong, D. Kingbiel, T. G. Nielsen, A. Knapp, M. Herold, R. Marcus