1. Institute of General Practice, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany.
2. Universidad Nacional de La Matanza, Buenos Aires, Argentina.
3. Instituto Universitario Hospital Italiano de Buenos Aires, Buenos Aires, Argentina.
4. Department of Urology, Yonsei University Wonju College of Medicine, Wonju, Korea.
5. Center of Evidence Based Medicine, Institute of Convergence Science, Yonsei University, Seoul, Korea.