International braz j urol, Volume: 42, Issue: 2, Pages: 253-261, Published: APR 2016 International braz j urol v.42 n.2 2016 International Braz J Urol Sociedade Brasileira de Urologia (SBU) instacron:SBU International Brazilian Journal of Urology : official journal of the Brazilian Society of Urology International Brazilian Journal of Urology, Vol 42, Iss 2, Pp 253-261 (2016)