[1] Hosp Univ Reina Sofia, Dept Oncol, Cordoba 14004, Spain
[2] Hosp Badalona Germans Trias & Pujol, Dept Oncol, Badalona, Spain
[3] Hosp Univ Marques de Valdecilla, Dept Oncol, Santander, Spain
[4] Hosp Duran & Reynals, Dept Oncol, Inst Catala Oncol, Lhospitalet De Llobregat, Spain
[5] Complejo Hosp Univ A Coruna, Dept Oncol, La Coruna, Spain
[6] Corp Sanitaria Parc Tauli, Dept Oncol, Sabadell, Spain
[7] Hosp Gen Univ Valencia, Dept Oncol, Valencia, Spain
[8] Hosp Univ Virgen de las Nieves, Dept Oncol, Granada, Spain
[9] Hosp Son Llatzer, Dept Oncol, Palma De Mallorca, Spain
[10] Spanish Minist Sci & Innovat, Dept Oncol, Hosp Clin San Carlos,Inst Carlos 3, Ctr Affiliated Red Temat Invest Cooperat RD06 002, Madrid, Spain