Authors’ contributions
Conception and design: Jilin Yang, and Kai Deng; acquisition of data: Hongyu, Dailan Yang, Zonghua Chen, Chao Liu, Zhong Huang, Rui Zhao, and Jing Shan; analysis and interpretation of data: Hailin Yan; drafting of the manuscript: Hailin Yan, Hongyu Huang; critical revision of the manuscript: Jilin Yang and Kai Deng; statistical analysis: Hailin Yan, Hongyu Huang; study supervision: Li Yang, Jilin Yang and Kai Deng. All authors have read and approved the manuscript.