1. Argentine Cochrane Centre Instituto Universitario Hospital Italiano Buenos Aires Argentina
2. Faculty of Medicine Damascus University Damascus Syrian Arab Republic
3. Department of Urology Yonsei University Wonju College of Medicine Wonju Korea
4. Department of Urology Changhai Hospital Second Military Medical University Shanghai China
5. University of Tromso Tromsdalen Norway
6. Urology Division Hospital Italiano de Buenos Aires Buenos Aires Argentina
7. Biblioteca Central Instituto Universitario Hospital Italiano Buenos Aires Argentina
8. Family and Community Medicine Service Hospital Italiano de Buenos Aires Buenos Aires Argentina