BIANCA: A PHASE 2 STUDY OF THE SAFETY AND EFFICACY OF TISAGENLECLEUCEL IN PEDIATRIC PATIENTS WITH RELAPSED/REFRACTORY MATURE B‐CELL NON‐HODGKIN LYMPHOMA. (12th June 2019) - Minard‐Colin, V.; Burkhardt, B.; Maude, S.; Phillips, C.; Diaz de Heredia Rubio, C.; Laetsch, T.W.; Curran, K.; Newsome, S.; Murray, N.; Pacaud, L.; Buechner, J.