1. Okinaka Memorial Institute for Medical Research, Toranomon Hospital Kajigaya, Japan
2. Department of Nephrology and Rheumatology, Toranomon Hospital Kajigaya, Japan
3. Department of Pathology, Toranomon Hospital, Japan
4. Department of Anatomy, Showa University School of Medicine, Japan
5. Department of Nephrology, Saga University School of Medicine, Japan