Li, Yunxiao
Yu, Ganggang
Yuan, Shaopeng
Tan, Chunting
Lian, Puqiao
Fu, Lixia
Hou, Qi
Xu, Bo
Wang, Haoyan
Funding for this research was provided by:
Beijing Municipal Natural Science Foundation (7142046, 7164250)
grant Shou Fa from Beijing Municipal Health Bureau (2011-2002-03)