. 2013 Oct 25;14:354. doi: 10.1186/1745-6215-14-354
Copyright © 2013 Wei 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.
Trial design flow chart.