Author Contributions: Drs H.-M. Wang, Chai, and Ho 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: H.-M. Wang and Ho. Acquisition of data: H.-M. Wang, L.-F. Wang, Chang, Hsu, and Ho. Analysis and interpretation of data: H.-M. Wang, Lin, Lee, Tai, Chai, and Ho. Drafting of the manuscript: H.-M. Wang, Lin, L.-F. Wang, Chang, Hsu, and Ho. Critical revision of the manuscript for important intellectual content: Lee, Tai, Chai, and Ho. Statistical analysis: Lin, L.-F. Wang, Chang, and Hsu. Administrative, technical, and material support: H.-M. Wang, L.-F. Wang, and Ho. Study supervision: Lee, Tai, Chai, and Ho.