1. Department of Surgery, Dokkyo Medical University Saitama Medical Center, Koshigaya, Saitama 343‑8555, Japan
2. Department of Nephrology and Hypertension, Saitama Medical Center, Saitama Medical University, Kawagoe, Saitama 350‑8550, Japan
3. Department of Pathology, Dokkyo Medical University Saitama Medical Center, Koshigaya, Saitama 343‑8555, Japan