AUTHOR CONTRIBUTIONS
Study concept and design: Lihua Song, Yigang Tong; Data
acquisition : Shanshan Lu, Shengdong Luo, Wen Xu, Bixia Hong, Wen Xu,
Hongbin Ma; Analysis and interpretation of data : Huahao Fan,
Bingke Bai, Zhenping Fan, Hongbin Ma, Weiwei Chen; Manuscript
write‐up : Lihua Song, Shanshan Lu. Revision and approval of the final
draft by all authors