Li, ChunMei
Peng, Ying
Zhou, Bin
Bai, WenJuan
Rao, Li
Funding for this research was provided by:
the National Natural Science Foundation of China (No. 81270289 and 81300170)
International Cooperation and Exchange of Sichuan Province (No. 2012HH0032)
the Doctoral Program of Higher Education of China (No. 20110181110011)