. 2012 Mar 30;11:97. doi: 10.1186/1475-2875-11-97
Copyright ©2012 Anvikar 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.
Participant flow.