. 2006 Jan 17;3(3):e24. doi: 10.1371/journal.pmed.0030024
Copyright: © 2006 Stasi et al.
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
Figure 1. Study Design and Results.
