1. Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan.
2. Department of Advanced Blood Purification Therapy, Hirosaki University Graduate School of Medicine, Hirosaki, Japan.
3. Department of Advanced Transplant and Regenerative Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan.
4. Department of Urology, Mutsu General Hospital, Mutsu, Japan.