Aguilera, X
Martínez-Zapata, M. J.
Hinarejos, P.
Jordán, M.
Leal, J.
González, J. C.
Monllau, J. C.
Celaya, F.
Rodríguez-Arias, A.
Fernández, J. A.
Pelfort, X.
Puig-Verdie, L. l.
Funding for this research was provided by:
the Spanish Ministry of Health and Social Policy (EC10-73)