. 2007 Nov 27;1:153. doi: 10.1186/1752-1947-1-153
Copyright © 2007 Trehan 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 1.
Foreign body as shown.