Intra-articular injection of sodium hyaluronate versus placenta-derived mesenchymal stem cells-differentiated chondrocytes for treatment of knee osteoarthritis
Li Zhi, Zhao Wei, Liu Wei, Zhou Ye, Jia Jing-qiao, Yang Li-feng
Chinese Journal of Tissue Engineering Research . 2014, (50): 8140 -8146 .  DOI: 10.3969/j.issn.2095-4344.2014.50.018