[1] Nagasaki Univ, Dpartment Nephrourol, Grad Sch Biomed Sci, Nagasaki 852, Japan
[2] Natl Hosp Org Shikoku Canc Ctr, Dept Urol, Matsuyama, Ehime, Japan
[3] Yamagata Univ, Sch Med, Dept Urol, Yamagata 99023, Japan
[4] Hokkaido Univ, Dept Urol, Grad Scohool Med, Sapporo, Hokkaido, Japan
[5] Kobe Univ, Dept Urol, Grad Sch Med, Kobe, Hyogo 657, Japan
[6] Kumamoto Univ, Dept Urol, Fac Life Sci, Kumamoto, Japan
[7] Hamamatsu Univ Sch Med, Dept Urol, Hamamatsu, Shizuoka 4313192, Japan
[8] Sapporo Med Univ, Dept Urol, Sch Med, Sapporo, Hokkaido, Japan
[9] Univ Tokyo, Res Ctr Adv Sci & Technol, Tokyo, Japan
[10] Kyushu Univ, Dept Urol, Grad Sch Med Sci, Fukuoka 812, Japan