[1] Cornell Univ, Weill Med Coll, New York, NY 10021 USA
[2] Columbia Univ, Dept Urol, New York, NY 10027 USA
[3] Case Western Reserve Univ, Dept Urol, Cleveland, OH 44106 USA
[4] Case Western Reserve Univ, Sch Med, Cleveland, OH 44106 USA
[5] Eli Lilly & Co, Indianapolis, IN 46285 USA