IRF4 rearrangement may predict favorable prognosis in children and young adults with primary head and neck large B‐cell lymphoma oleh Xiang‐Nan Jiang, Fang Yu, Tian Xue, Qing‐Xin Xia, Qian‐Ming Bai, Bao‐Hua Yu, Ruo‐Hong Shui, Xiao‐Yan Zhou, Xiong‐Zeng Zhu, Jun‐Ning Cao, Xiao‐Nan Hong, Xiao‐Qiu Li