Tsukamoto, Sadamu; Akaza, Hideyuki; Imada, Seiki; Koiso, Kenkichi; Shirai, Tomoyuki; Ideyama, Yukitaka; Kudo, Masafumi; Tsukamoto Sadamu; Department of Urology, Institute of Clinical Medicine, University of Tsukuba; Akaza Hideyuki; Department of Urology, Institute of Clinical Medicine, University of Tsukuba; Imada Seiki; Department of Urology, Institute of Clinical Medicine, University of Tsukuba; Koiso Kenkichi; Department of Urology, Institute of Clinical Medicine, University of Tsukuba; Shirai Tomoyuki; First Department of Pathology, Nagoya City University; Ideyama Yukitaka; Endocrinology and Metabolic Disease Research Laboratory, Institute for Drug Discovery Research; Kudo Masafumi; Endocrinology and Metabolic Disease Research Laboratory, Institute for Drug Discovery Research