1. Division of Nephrology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan
2. Division of Nephrology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan
3. Department of Public Health, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan
4. Department of Microbiology and Immunology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan
5. Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei 110, Taiwan
6. Department of Family Medicine, Wan Fang Hospital, Taipei Medical University, Taipei 110, Taiwan
7. Department of Family Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan
8. Department of Occupational Medicine, Wan Fang Hospital, Taipei Medical University, Taipei 110, Taiwan
9. Department of Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan