[1] Hosp Clin Univ Santiago de Compostela, Santiago De Compostela, Spain
[2] Corporacio Sanitaria Parc Tauli, Sabadell, Spain
[3] Hosp Clin Univ Lozano Blesa, Zaragoza, Spain
[4] Clin Univ Navarra, Madrid, Spain
[5] Hosp Univ Dexeus, Grp Quironsalud, Barcelona, Spain
[6] Hosp Univ Ramon y Cajal, Madrid, Spain
[7] Complejo Hosp Univ A Coruna, La Coruna, Spain
[8] Hosp Univ HM Sanchinarro, Madrid, Spain
[9] Hosp Alvaro Cunqueiro, Vigo, Spain
[10] Hosp Santa Creu & Sant Pau, Barcelona, Spain
[11] Hosp Univ San Juan Alicante, Alicante, Spain
[12] Hosp Clin Univ Salamanca, Salamanca, Spain
[13] Hosp Lluis Alcanyis Xativa, Xativa, Spain
[14] Hosp Univ Med Quirurg Jaen, Jaen, Spain
[15] Hosp Univ Reina Sofia, Cordoba, Spain
[16] Hosp Marina Baixa Alicante, Alicante, Spain
[17] Hosp Gen Granollers, Granollers, Spain
[18] Inst Catala Oncol Badalona, Badalona, Spain