. 2011 Dec;8(Suppl1):S9–S14.
Copyright: © Dental Research Journal
This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 1.
Diagram of the systematic review and searches