. 2012 Oct 4;20(1):46. doi: 10.1186/2008-2231-20-46
Copyright ©2012 Ayati 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.