[1] Inst Oncol Dr Rosell, Barcelona, Spain
[2] Pangaea Oncol, Barcelona, Spain
[3] Hosp Univ Canarias, Tenerife, Spain
[4] HURyVV Hosp Univ Reg & Virgen Victoria Malaga, Unidad Intercentros Oncol, IBIMA Inst Invest Biomed Malaga, Malaga, Spain
[5] Hosp Univ Virgen Macarena, Seville, Spain
[6] Hosp Virgen Arrixaca, Med Oncol, Murcia, Spain
[7] Hosp Clin Barcelona, Dept Med Oncol, Barcelona, Spain
[8] Vall dHebron Inst Oncol, Vall dHebron Hosp, Barcelona, Spain
[9] La Paz Univ Hosp, Dept Med Oncol, Madrid, Spain
[10] Hosp Miguel Servet, Med Oncol, Zaragoza, Spain
[11] Hosp Univ & Politec La Fe, Valencia, Spain
[12] Hosp Univ Dr Peset, Valencia, Spain
[13] Complexo Hosp Univ Vigo, Vigo, Spain
[14] Hosp Univ Donostia, San Sebastian, Spain
[15] Hosp Univ Salamanca, Salamanca, Spain
[16] Hosp Univ Insular Gran Canaria, Las Palmas Gran Canaria, Spain
[17] Hosp Univ Dexeus, Inst Oncol Dr Rosell, Dept Oncol, Barcelona, Spain
[18] Hosp 12 Octubre, Madrid, Spain
[19] Hosp Gen Univ Valencia, Valencia, Spain