. 2013 Dec 19;66(4):437–439. doi: 10.5173/ceju.2013.04.art12
Copyright by Polish Urological Association
This is an Open Access article distributed under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License, permitting all non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.