1. Department of Medicine, Division of Nephrology, Showa University School of Medicine; Tokyo Japan
2. Medical Science, Astellas Pharma, Inc.; Tokyo Japan
3. Global Health Economics and Outcomes Research, Astellas Pharma Europe B.V.; Leiden The Netherlands
4. Health Economics and Outcomes Research, Creativ-Ceutical; Paris France
5. Health Economics and Outcomes Research, Creativ-Ceutical; Tokyo Japan