Wang, Yongqing http://orcid.org/0000-0001-8777-9624
Liu, Lishan
Funding for this research was provided by:
National Natural Science Foundation of China (11371221)
Natural Science Foundation of Shandong Province of China (ZR2013AQ014, ZR2015AL002)
Specialized Research Fund for the Doctoral Program of Higher Education (20133705120003)
Project of Shandong Province Higher Educational (J13LI08)