. 2008 Dec 2;1:367. doi: 10.1186/1757-1626-1-367
Copyright © 2008 Maher and Nassar; 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.
Black esophageal mucosa of lower 2/3.