Yang, Heng
Tong, Qiong
Zhao, Pan
Funding for this research was provided by:
China Social Science Foundation Major Project “Research on High-speed Rail Theoretical Framework and Evolutionary Path” (17ZDA084)
Article History
Received: 10 December 2020
Accepted: 30 August 2021
First Online: 26 September 2021
Declarations
:
: There is no conflict of interest exits in the submission of this manuscript, and manuscript is approved by all authors for publication. I would like to declare on behalf of my co-authors that the work described was original research that has not been published previously, and not under consideration for publication elsewhere, in whole or in part. All the authors listed have approved the manuscript that is enclosed.
: This study was carried out in accordance with the recommendations of ethical guidelines of the Ethical Review Board of Beijing Jiaotong University BJ202010017. The protocol was approved by the Ethical Review Board of Beijing Jiaotong University. All subjects gave written informed consent in accordance with the Declaration of Helsinki. The studies involving human participants were reviewed and approved by Beijing Jiaotong University.
: All participants freely give consent to submit the paper and understand the rule of copyright.