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Zhang, Boling BE; Wang, Qian BE; Wang, Yuhao BE; Tong, Ruipeng PhD
From the School of Emergency Management and Safety Engineering, China University of Mining and Technology-Beijing, Beijing, China.
Ethical Considerations and Disclosures: No experimental studies on either humans or animals are involved in this study. The processes of data collecting conformed to the principles outlined in the Declaration of Helsinki. Written informed consent was obtained from each participant, and the explanation was provided in methodology section as well.
Funding sources: The work was financially supported by the National Natural Science Foundation of China (no. 52074302) and the Natural Science Foundation of Beijing Municipality (no. 8212015).
Conflict of interest: None declared.
Supplemental digital contents are available for this article. Direct URL citation appears in the printed text and is provided in the HTML and PDF versions of this article on the journal’s Web site (www.joem.org).
Address correspondence to: Ruipeng Tong, PhD, D11 Xueyuan Rd, Haidian District, Beijing 100083, PR China ([email protected]).