Variable global distribution of cell-of-origin from the ROBUST phase III study in diffuse large B-cell lymphoma oleh Grzegorz S. Nowakowski, Annalisa Chiappella, Thomas E. Witzig, David W. Scott, Michele Spina, Randy D. Gascoyne, Lei Zhang, Jacqueline Russo, Janet Kang, Jingshan Zhang, Yingyong Xu, Umberto Vitolo