Reduced intensity conditioning, combined transplantation of haploidentical hematopoietic stem cells and mesenchymal stem cells in patients with severe aplastic anemia. oleh Xiao-Hong Li, Chun-Ji Gao, Wan-Ming Da, Yong-Bin Cao, Zhi-Hong Wang, Li-Xin Xu, Ya-Mei Wu, Bei Liu, Zhou-Yang Liu, Bei Yan, Song-Wei Li, Xue-Liang Yang, Xiao-Xiong Wu, Zhong-Chao Han