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Article History

Received: 3 September 2022

Accepted: 28 February 2023

First Online: 20 March 2023

Competing interests

: The authors declare no competing interests.

: Approval was obtained from the ethics committee of University Xi’an Jiaotong University. The survey process and procedures used in this study adhere to the tenets of the Declaration of Helsinki.

: The informed consent was obtained from all participants and/or their legal guardians for participation in the study. We contact the participants via email and telephone to solicit cooperation, and then the interviewers visited the firms that agreed to participate. Before the face-to-face interviews began, we read out the possible uses of their information and asked for their consent again. Thus, informed consent was obtained from all participants before we conducted the survey.