. 2012 Oct 2;2012:918571. doi: 10.1155/2012/918571
Copyright © 2012 J. B. Keogh and P. M. Clifton.
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 1.
CONSORT flow diagram.