About the Authors
- Lili Zhao
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Roles Methodology
Affiliation Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China
- Jianing Yang
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Roles Conceptualization, Investigation
* E-mail: yjn_1982@cdmc.edu.cn
Affiliation Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China
- Weiwei Liu
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Roles Resources, Software
Affiliation Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China
Competing Interests
The authors have declared that no competing interests exist.