1. Department of Urology Hirosaki University Graduate School of Medicine Hirosaki Japan
2. 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. Sanford Burnham Prebys Medical Discovery Institute Tumor Microenvironment and Metastasis Program NCI‐Designated Cancer Center La Jolla California USA