. 2006 Jun 26;4:14. doi: 10.1186/1478-4491-4-14
Copyright © 2006 Buchan 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.
Figure 2.
Main reported source countries.