Increased serum level of interleukin-6 correlates with negative prognostic factors in extranodal NK/T-cell lymphoma - Bao, Changqian; Zhou, De; Zhu, Lixia; Qian, Wenbin; Ye, Xiujin (Translational Cancer Research; Vol 9, No 4 (April 30, 2020): Translational Cancer Research, 2020)