1. Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
2. Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
3. School of Medicine, College of Medicine, I-Shou University, Kaohsiung 824, Taiwan
4. Division of General Medicine, Department of Internal Medicine, E-DA Hospital, Kaohsiung 824, Taiwan
5. Department of Physiology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
6. Institute of Molecular Medicine, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
7. Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
8. Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC 27599, USA
9. Clinical Medicine Research Center, National Cheng Kung University Hospital, Tainan 704, Taiwan