1. University of Erlangen; Department of Urology; Krankenhausstrasse 12 Erlangen Germany 91054
2. Medical Center - University of Freiburg; German Cochrane Centre; Freiburg Germany
3. Deutsche Gesellschaft für Urologie e.V.; UroEvidence; Düsseldorf, Berlin Germany
4. University Medical Center Freiburg; Department of General and Visceral Surgery & German Cochrane Centre; Hugstetter Str. 55 Freiburg Germany 79106
5. Medical Center - University of Freiburg; Center for Medical Biometry and Medical Informatics; Stefan-Meier-Str. 26 Freiburg Germany 79104
6. Institute of Medical Biometry and Medical Informatics, University Medical Center Freiburg; German Cochrane Centre; Berliner Allee 29 Freiburg Germany 79110
7. University of Florida; Department of Urology; Box 100247 Room N203 Gainesville Florida USA 32610-0247
8. Malcom Randall Veterans Affairs Medical Center; Gainesville Florida USA