This study was funded by the Spanish Ministry of Economy and Competitiveness (grant numbers PSE-010000-2006-6 and IPT-010000-2010-36)Lopez-Lasanta, M., Julià, A., Maymó, J., Fernández-Gutierrez, B., Ureña-Garnica, I., Blanco, F.J., Cañete, J.D., Alperi-López, M., Olivè, A., Corominas, H., Tornero, J., Erra, A., Almirall, M., Palau, N., Ortiz, A., Avila, G., Rodriguez-Rodriguez, L., Alonso, A., Tortosa, R., Gonzalez-Alvaro, I., Marsal, S