[1] Med Univ Vienna, Dept Urol, A-1090 Vienna, Austria
[2] Al Ahliyya Amman Univ, Hourani Ctr Appl Sci Res, Amman 19328, Jordan
[3] Univ Texas Southwestern Med Ctr Dallas, Dept Urol, Dallas, TX 75390 USA
[4] Charles Univ Prague, Fac Med 2, Dept Urol, Prague 15006, Czech Republic
[5] Weill Cornell Med Coll, Dept Urol, New York, NY 10065 USA
[6] Karl Landsteiner Inst Urol & Androl, A-1090 Vienna, Austria