[External therapies of traditional Chinese medicine combined with sodium hyaluronate injected in articular cavity therapy on knee osteoarthritis: Meta-analysis]. - Xu YK; Zhu FG; Feng EY; Fan CL; Yu GS; Wei YZ; Xie LH (Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 2018)