[1] Hosp Gen Univ Gregorio Maranon, Madrid, Spain
[2] Hosp Univ Puerta de Hierro, Madrid, Spain
[3] Ramon y Cajal Univ Hosp, Dept Med Oncol, Madrid, Spain
[4] Hosp Univ Cent Asturias, Oviedo, Spain
[5] Hosp 12 Octubre, Madrid, Spain
[6] Hosp Sabadell, Corp Sanit Parc Tauli, Sabadell, Spain
[7] Fimabis, Fuengirola, Spain
[8] Hosp Univ San Cecilio, Med Oncol, Granada, Spain
[9] Vall Hebron Univ Hosp Inst Oncol VHIO, Barcelona, Spain
[10] Hosp Univ 12 Octubre, Madrid, Spain