Article History
Received: 15 October 2019
Accepted: 5 January 2021
First Online: 17 March 2021
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The authors declare that they obtained the approval of “Ethic and Animal Welfare Committee of Beijing Forestry University” for conducting the present study based on Interviews/surveys. In addition, the authors declare that they obtained the informed consent from human participants involved in this study.
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