Chieh Cheng, Hsiao-Yu Wu, Ya-Ting Hsu, Yi-Kai Chen, Yung-An Jang, Chih-Fan Hung, and Wei-Ming Jiang were with the Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Miaoli County, Taiwan, at the time of this study. Shu-Chen Kuo is with the National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Zhunan. Brandon Fan is with the Richard Montgomery High School, Rockville, MD. Byron Fan is with the Department of Applied Mathematics, Brown