1. Department of Nephrology, Graduate School of Medical Sciences, Nagoya City University, Japan
2. Research Subcommittee of Japanese Renal Data Registry, Japanese Society for Dialysis Therapy, Japan
3. Department of Nephrology, Osaka University Graduate School of Medicine, Japan
4. Renal Data Registry Committee, Japanese Society for Dialysis Therapy, Japan
5. Division of Nephrology, Hypertension and Endocrinology, Department of Internal Medicine, Nihon University School of Medicine, Japan
6. Yabuki Hospital, Yamagata, Japan