Journal of Urology | January 7, 2005 | Volume: 173 | Issue: 2 | Pages: 401-404
Journal of Urology | August 25, 2004 | Volume: 169 | Issue: 5 | Pages: 1815-1817
Cancer | August 25, 2002 | Volume: 91 | Issue: 11 | Pages: 2196-2204
10.1002/1097-0142(20010601)91:11<2196::aid-cncr1249>3.0.co;2-#