Safety and efficacy of autologous and allogeneic humanized CD19-targeted CAR-T cell therapy for patients with relapsed/refractory B-ALL ======================================================================================================================================= * Fengmei Song * Yongxian Hu * Yanlei Zhang * Mingming Zhang * Tingting Yang * Wenjun Wu * Simao Huang * Huijun Xu * Alex H Chang * He Huang * Guoqing Wei