[1] Univ Tsukuba, Dept Urol & Androl, Grad Sch Comprehens Human Sci, Tsukuba, Ibaraki 305, Japan
[2] Kyoto Univ, Grad Sch Med, Dept Urol, Kyoto 6068501, Japan
[3] Hamamatsu Univ Sch Med, Dept Urol, Hamamatsu, Shizuoka, Japan
[4] Kyoto Prefectural Univ Med, Dept Urol, Kyoto 602, Japan
[5] Sapporo Med Univ, Sch Med, Dept Urol Surg & Androl, Sapporo, Hokkaido, Japan
[6] Iwate Med Univ, Sch Med, Dept Urol, Morioka, Iwate, Japan
[7] Shizuoka Canc Ctr, Shizuoka, Japan
[8] Kyushu Univ, Grad Sch Med Sci, Dept Urol, Fukuoka 812, Japan
[9] Tokyo Womens Med Univ, Dept Radiol, Tokyo, Japan
[10] Kinki Univ, Sch Med, Dept Med Oncol, Higashiosaka, Osaka 577, Japan
[11] Kyoto Univ, Grad Sch Med, Dept Pharmacoepidemiol, Kyoto 6068501, Japan
[12] Univ Tsukuba, Inst Clin Med, Grad Sch Comprehens Human Sci, Dept Urol, Tsukuba, Ibaraki 305, Japan