About the Authors
- Dekun Dong
-
Roles Conceptualization, Writing – review & editing
Affiliation Qingdao University of Technology, Qingdao City, Shandong Province, China
- Shuang Li
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Roles Writing – original draft
* E-mail: xiaoge2143@163.com
Affiliation Qingdao University of Technology, Qingdao City, Shandong Province, China
Competing Interests
The authors have declared that no competing interests exist.