1. Division of Nephrology, Department of Paediatrics, Changhua Christian Hospital, Changhua 500, Taiwan
2. Department of Urology, Taipei City Hospital, Taipei 10341, Taiwan
3. Department of Pathology, Chung Shan Medical University Hospital, Taichung 40221, Taiwan
4. Department of Medical Research, Changhua Christian Hospital, Changhua 500, Taiwan
5. Department of Clinical Biochemistry, Chung Shan Medical University Hospital, Taichung 40221, Taiwan
6. Division of Nephropathy, Department of Internal Medicine, Chang Bing Show-Chwan Memborial Hospital, Changhua 505, Taiwan
7. Institute of Biochemistry, Microbiology and Immunology, Medical College, Chung Shan Medical University, Taichung 40221, Taiwan
8. Department of Biochemistry, School of Medicine, College of Medicine, Chung Shan Medical University, Taichung 40221, Taiwan