1. Division of Nephrology and Hypertension, Department of Internal MedicineSt. Marianna University School of Medicine Kawasaki Japan
2. Department of AnatomySt. Marianna University School of Medicine Kawasaki Japan
3. Institute for Ultrastructural MorphologySt. Marianna University School of Medicine Kawasaki Japan
4. Department of Internal MedicineJapan Community Health Care Organization, Tokyo Takanawa Hospital Tokyo Japan