1. Department of Blood Purification, Kidney Center; Tokyo Women's Medical University; Tokyo Japan
2. Medical Engineering Center; Medical Hospital of Tokyo Medical and Dental University; Tokyo Japan
3. Kawasumi Laboratories Incorporated; Tokyo Japan
4. Department of Hemodialysis and Apheresis; The University of Tokyo Hospital; Tokyo Japan
5. Division of Nephrology and Endocrinology; The University of Tokyo School of Medicine; Tokyo Japan
6. Department of Medicine, Kidney Center; Tokyo Women's Medical University; Tokyo Japan