1. Division of Nephrology and Kidney Center; Kobe University Graduate School of Medicine; Kobe Hyogo Japan
2. Department of Nephrology; Toranomon Hospital Kajigaya; Tokyo Japan
3. Division of Clinical Nephrology and Rheumatology; Niigata University Graduate School of Medical and Dental Sciences; Niigata Niigata Japan
4. Department of Laboratory Medicine; Suiyukai Clinic; Kashihara Nara Japan
5. Morita clinic; Nagoya Aichi Japan
6. Department of Nephrology; Toranomon Hospital; Tokyo Japan
7. Department of Nephrology, Faculty of Medicine; University of Tsukuba; Tsukuba Ibaraki Japan
8. Division of Nephrology, Department of Internal Medicine; Wakayama Medical University; Wakayama Wakayama Japan
9. Department of Neurology, Graduate School of Medical Sciences; Kumamoto University; Kumamoto Kumamoto Japan