. 2014 Oct 15;8(6):1772–1776. doi: 10.3892/etm.2014.2023
Copyright © 2014, 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.