Peripheral leukemia burden at time of apheresis negatively affects the clinical efficacy of CART19 in refractory or relapsed B-ALL oleh Biping Deng, Jing Pan, Zhaoli Liu, Shuangyou Liu, Yunlong Chen, Xiaomin Qu, Yu'e Zhang, Yuehui Lin, Yanlei Zhang, Xinjian Yu, Zhongxin Zhang, Xuansha Niu, Rong Luan, Ming Ma, Xiaomei Li, Tingting Liu, Xi'ai Wu, Huan Niu, Alex H. Chang, Chunrong Tong