1. Department of Pediatrics, Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, No.1, Daxue Rd., East Dist., Tainan City 701, Taiwan, PR China;
2. Division of Pediatric Nephrology, Department of Pediatrics, National Cheng Kung University Hospital, No.138, Shengli Rd., North Dist., Tainan City 704, Taiwan, PR China;
3. Division of Nephrology, Department of Internal Medicine, E-DA Hospital/I-Shou University, No.1, Yida Rd., Yanchao Dist., Kaohsiung City 824, Taiwan, PR China;
4. Department of Long Term Care, Chung Hwa University of Medical Technology, No.89, Wenhua 1st St., Rende Dist., Tainan City 717, Taiwan