. 2013 Sep 2;6(5):1312–1316. doi: 10.3892/etm.2013.1280
Copyright © 2013, Spandidos Publications
This is an open-access article licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. The article may be redistributed, reproduced, and reused for non-commercial purposes, provided the original source is properly cited.