[1] Ctr Postgrad Med Educ, Dept Urol, 231 Czerniakowska St, PL-01813 Warsaw, Poland
[2] Med Univ Gdansk, Dept Urol, Gdansk, Poland
[3] Nicolaus Copernicus Univ, Dept Regenerat Med, Coll Med, Bydgoszcz, Poland
[4] Cantabria Univ, Sch Med, Marques de Valdecilla Univ Hosp, IDIVAL,Androl & Reconstruct Urol Unit, Santander, Spain
[5] Univ Florence, Careggi Hosp, Dept Urol & Androl, Florence, Italy
[6] Univ Genoa, Dept Surg & Diag Integrated Sci DISC, Genoa, Italy
[7] Asklepios Hosp Barmbek, Dept Urol, Hamburg, Germany
[8] Ghent Univ Hosp, Dept Urol, Ghent, Belgium
[9] AZ Maria Middelares, Ghent, Belgium
[10] Univ Med Ctr Hamburg Eppendorf, Dept Urol, Hamburg, Germany