. 2007 Jun 1;4:11. doi: 10.1186/1742-7622-4-11
Copyright © 2007 Degomme and Guha-Sapir; 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.
Number of surveys per year entered in CE-DAT.