Author Contributions: Drs Cheng, Li, Huang, Xue, and Wang had full access to all the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Cheng, Li, Huang, and Wang. Acquisition of data: Xue, Jiang, and Wu. Analysis and interpretation of data: Xue, Jiang, and Wu. Drafting of the manuscript: Cheng, Li, Huang, and Wang. Critical revision of the manuscript for important intellectual content: Xue, Jiang, and Wu. Statistical analysis: Cheng, Li, Xue, Jiang, and Wang. Obtained funding: Cheng, Li, and Wang. Administrative, technical, and material support: Cheng, Li, Huang, Xue, Jiang, Wang, and Wu. Study supervision: Huang and Jiang.