[1] Hosp Univ Fdn Alcorcon, Alcorcon, Spain
[2] Ctr Integral Oncol Clara Campal, Madrid, Spain
[3] Hosp del Mar, Barcelona, Spain
[4] Complejo Hosp Navarra, Pamplona, Spain
[5] Hosp Univ La Paz, Madrid, Spain
[6] Complexo Hosp Univ Santiago de Compostela, Santiago De Compostela, Spain
[7] Hosp Univ La Fe, Valencia, Spain
[8] Politecn La Fe, Valencia, Spain
[9] Hosp Reina Sofia Cordoba, Cordoba, Spain
[10] Univ Oviedo, Hosp Cent Asturias, E-33080 Oviedo, Spain
[11] GEICO, Mallorca, Spain
[12] Son Llatzer Univ Hosp, Mallorca, Spain
[13] Inst Valenciano Oncol, Mol Biol Lab, Valencia, Spain
[14] Ctr Integral Oncol Clara Campal, Madrid, Spain
[15] Fdn Inst Valenciano Oncol, Valencia, Spain
[16] Hosp Univ Ramon Y Cajal, Dept Med Oncol, Madrid, Spain