. 2009 Jul 7;2:125. doi: 10.1186/1756-0500-2-125
Copyright © 2009 Barnekow 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.