Wang, Anxin
Chen, Guojuan
Su, Zhaoping
Liu, Xiaoxue
Yuan, Xiaodong
Jiang, Ruixuan
Cao, Yibin
Chen, Shuohua
Luo, Yanxia
Guo, Xiuhua
Wu, Shouling
Zhao, Xingquan
Funding for this research was provided by:
National Natural Science Foundation of China (81202279)
advanced health care professional development project of Beijing Municipal Health Bureau (2009-3-32)