. 2013 Aug 20;5(3):e44. doi: 10.4081/rt.2013.e44
©Copyright M. Cavalcanti Maroja Silvino et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.