Qiang Yao, Kai Chen, Lan Yao, Peng-hui Lyu, Tian-an Yang, Fei Luo, Shan-quan Chen1, Lu-yang He1,Zhi-yong Liu#.Scientometric trends and knowledge map of global health systems research.Health Research Policy and Systems,2014,12:26 doi:10.1186/1478-4505-12-26 (IF 1.80, SCI&SSCI Q2)