Funding for this research was provided by:
Natural Science Foundation of China (No: 61374078)
NPRP grant (NPRP 4-1162-1-181)
Science and technology fund of Guizhou Province (LH [2015] No. 7612)
Chongqing Research Program of Basic Research and Frontier Technology (No. cstc2015jcyjBX0052)