Open access
Submitted: 20 June 2011 Published: 05 April 2012
DOI: 10.5772/38432
From the Edited Volume
Edited by Josette Bettany-Saltikov and Berta Paz-Lourido
Submitted: 20 June 2011 Published: 05 April 2012
© 2012 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution 3.0 License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.