Qi, Mingming
Gao, Heming
Liu, Guangyuan
Funding for this research was provided by:
Fundamental Research Funds for the Central Universities (XDJK2016E025)
National Natural Science Foundation of China (61472330)
Humanity and Social Sciences Youth Foundation of Ministry of Education of China (15YJC190017)
Article History
Received: 3 December 2016
Accepted: 6 May 2018
First Online: 10 May 2018
Compliance with ethical standards
:
: The authors declare no competing financial interests.