. 2012 May 1;17(6):e969–e976. doi: 10.4317/medoral.17658
Copyright: © 2012 Medicina Oral S.L.
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 work is properly cited.
Table 1. Distribution of study subjects.
