1. The Second Department of Internal Medicine,Nagasaki University,Nagasaki 852-8501
2. Department of Histology and Cell Biology,Nagasaki University,Nagasaki 852-8501
3. Department of Nephrology,Tokai University,Isehara 259-1193
4. Division of Renal Care Unit,Nagasaki University,Nagasaki 852-8501