1. Division of Nephrology, National Taiwan University Hospital, Taipei, Taiwan
2. Division of Nephrology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taipei, Taiwan
3. School of Medicine, Tzu Chi University, Hualien, Taiwan
4. Division of General Surgery, Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan
5. Department of Internal Medicine, Urology, National Taiwan University Hospital, Taipei, Taiwan