1. Department of Human Pathology, Wakayama Medical University, Wakayama, Japan
2. Department of Diagnostic Pathology, Kobe Kyodo Hospital, Nagata-ku, Kobe, Japan
3. Division of Human Pathology, Shiga University of Medical Science, Otsu, Shiga, Japan
4. Department of Urology, Wakayama Medical University, Wakayama, Japan