1. Department of Internal Medicine, National Cheng Kung University Hospital, Dou-Liou Branch, College of Medicine, National Cheng Kung University, Yunlin, Taiwan
2. Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
3. Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
4. Department of Internal Medicine, Tainan Hospital, Ministry of Health and Welfare, Tainan, Taiwan
5. Departments of Laboratory Medicine and Internal Medicine, China Medical University Hospital, School of Medicine, China Medical University, Taichung, Taiwan
6. Department of Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan