Zhang, Yuanqiang
Liu, Lian
Wang, Shuaishuai
Zhao, Yunpeng
Liu, Yi
Li, Jingkun
Nie, Lin
Cheng, Lei
Funding for this research was provided by:
Natural Science Foundation of Shandong Province (ZR2013HM095)
National Natural Science Foundation of China (81572191, 81501880)