. 2013 Nov 13;57(4):e37. doi: 10.4081/ejh.2013.e37
©Copyright D. Curzi 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.