International braz j urol, Volume: 41, Issue: 5, Pages: 1002-1007, Published: OCT 2015 International Brazilian Journal of Urology, Vol 41, Iss 5, Pp 1002-1007 (2015) International braz j urol v.41 n.5 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