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Authors
Ma, Chenjin
Jiang, Yan
Li, Yang
Zhang, Yuming
Wang, Xiaojun
Ma, Shuangge
Wang, Yu http://orcid.org/0000-0002-8009-9076
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Funding
Funding for this research was provided by:
the MOE Project of Key Research Institute of Humanities and Social Sciences at Universities (16JJD910002)
Fund for building World-Class Universities (Disciplines) of Renmin University of China
Yale MacMillan Center Faculty Award
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Article History
Received: 27 December 2018
Accepted: 28 May 2019
First Online: 7 June 2019
Ethics approval and consent to participate
: This study was approved by a Research Ethics Review Committee at Renmin University of China. Each interviewee was asked to sign an informed consent form. An interviewee was excluded if he/she refused to participate.
: Not applicable.
: The authors declare that they have no competing interests.
