[1] Univ Navarra Clin, Navarra, Spain
[2] H Virgen Rocio, Seville, Spain
[3] H Juan Canalejo, Coruna, Spain
[4] H de Bellvitge, Barcelona, Spain
[5] H Doce de Octubre, Madrid, Spain
[6] H Marques de Valdecilla, Santander, Spain
[7] H Puerta de Hierro, Madrid, Spain
[8] H Clin, Barcelona, Spain
[9] H Sant Pau, Barcelona, Spain
[10] H Gragorio Maranon, Madrid, Spain