1. Instituto Universitario Hospital Italiano; Argentine Cochrane Centre; Potosí 4234 Buenos Aires Buenos Aires Argentina C1199ACL
2. Hospital Italiano de Buenos Aires; Family and Community Medicine Service; Tte. Gral. Juan Domingo Perón 4190 Buenos Aires Buenos Aires Argentina C1199ABB
3. Damascus University; Faculty of Medicine; Mazzeh Street Damascus Syrian Arab Republic
4. Yonsei University Wonju College of Medicine; Department of Urology; 20 Ilsan-ro Wonju Gangwon Korea, South 26426
5. Yonsei University Wonju College of Medicine; Institute of Evidence Based Medicine; 20 Ilsan-ro Wonju Gangwon Korea, South 26426
6. Changhai Hospital, Second Military Medical University; Department of Urology; 168 Changhai Road Shanghai China
7. University of Tromso; 9020 Storbakkvegen 21 Tromsdalen Norway H0101
8. Instituto Universitario Hospital Italiano; Biblioteca Central; J.D. Perón 4190 Buenos Aires Argentina C1199ABB