1. Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Miaoli County, Taiwan
2. Graduate Institute of Biostatistics, College of Public Health, China Medical University, Taichung, Taiwan
3. Division of Biometrics I, OB/CDER, Food and Drug Administration, Silver Spring, MD
4. Department of Applied Mathematics, Brown University, Providence, RI
5. Richard Montgomery High School, Rockville, MD