[1] Mayo Clin, Dept Urol, Rochester, MN 55905 USA
[2] Univ Calif Irvine, Irvine, CA 92717 USA
[3] Univ Pittsburgh, Med Ctr, Pittsburgh, PA 15260 USA
[4] Univ Texas SW Med Ctr Dallas, Dallas, TX 75390 USA
[5] Case Western Reserve Univ, Cleveland, OH 44106 USA
[6] Cleveland Clin, Cleveland, OH 44106 USA
[7] Columbia Univ Med Ctr, New York, NY USA
[8] Univ Minho, Sch Hlth Sci, Braga, Portugal