A PHASE IB STUDY EVALUATING THE SAFETY AND CLINICAL ACTIVITY OF ATEZOLIZUMAB COMBINED WITH OBINUTUZUMAB IN PATIENTS WITH RELAPSED OR REFRACTORY NON‐HODGKIN LYMPHOMA (NHL). (June 2017) - Palomba, M.L.; Till, B.G.; Park, S.I.; Morschhauser, F.; Cartron, G.; Marks, R.; Penuel, E.; Chitra, S.; Kuhn, M.; Popplewell, L.