1. Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
2. Center for Quantitative Sciences, Vanderbilt University Medical Center, Nashville, TN
3. Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA
4. Department of Neurology, Tainan Sin Lau Hospital, Tainan, Taiwan
5. Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
6. Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan
7. Department of Public Health, College of Medicine, National Cheng Kung University, Tainan
8. Department of Public Health, College of Public Health, China Medical University, Taichung, Taiwan