Xing, Yuping http://orcid.org/0000-0002-2936-206X
Zhang, Runtong http://orcid.org/0000-0003-0246-5058
Wang, Jun
Bai, Kaiyuan
Xue, Jing
Funding for this research was provided by:
National Natural Science Foundation of China (71532002)
Fundamental Funds for Humanities and Social Sciences of Beijing Jiaotong University (2016JBZD01)
Article History
Received: 12 May 2018
Accepted: 21 May 2019
First Online: 1 June 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.