Ponce, Guillermo
Quiñones-Lombraña, Adolfo
Martín-Palanco, Noelia Guerra
Rubio-Solsona, Estrella
Jiménez-Arriero, Miguel Ángel
Palomo, Tomás
Hoenicka, Janet
Funding for this research was provided by:
Fondo de Investigaciones Sanitarias (011 /00737)