Microfracture technique plus bone marrow mesenchymal stem cell transplantation for repair of articular cartilage injury of the knee  
Hu Zuo-hong, Wang Yu-long, Cai Zheng-dong, Chen Yu-quan, Xia Yan
Chinese Journal of Tissue Engineering Research . 2015, (14): 2243 -2249 .  DOI: 10.3969/j.issn.2095-4344.2015.14.019