. 2013 Nov 21;14:337. doi: 10.1186/1471-2105-14-337
Copyright © 2013 Hong et al.; licensee BioMed Central Ltd.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.