International Brazilian Journal of Urology, Vol 41, Iss 3, Pp 569-575 (2015) International braz j urol, Volume: 41, Issue: 3, Pages: 569-575, Published: JUN 2015 International braz j urol v.41 n.3 2015 International Braz J Urol Sociedade Brasileira de Urologia (SBU) instacron:SBU International Brazilian Journal of Urology : official journal of the Brazilian Society of Urology