About the Authors

Lili Zhao

Roles Methodology

Affiliation Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China

Jianing Yang

Roles Conceptualization, Investigation

yjn_1982@cdmc.edu.cn

Affiliation Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China

Weiwei Liu

Roles Resources, Software

Affiliation Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China

Competing Interests

The authors have declared that no competing interests exist.