1. Department of Nephrology, Sasebo Chuo Hospital, Sasebo, Japan
2. Medical Education Development Center, Nagasaki University Hospital, Nagasaki, Japan
3. Department of Cerebrovascular Medicine, Sasebo Chuo Hospital, Sasebo, Japan
4. Department of Neurosurgery, Sasebo Chuo Hospital, Sasebo, Japan
5. Rheumatic and Collagen Disease Center, Sasebo Chuo Hospital, Sasebo, Japan
6. Department of Nephrology, Nagasaki University Hospital, Nagasaki, Japan