1. Department of Medical Oncology, Hospital Álvaro Cunqueiro, Vigo, Spain
2. Department of Medical Oncology, Hospital Universitari de Sant Joan de Reus, URV, IISPV, Tarragona, Spain
3. Department of Medical Oncology, Hospital Clinico Universitario San Carlos. Department of Medicine, School of Medicine, Universidad Complutense de Madrid (UCM), IdISSC, Madrid, Spain
4. Department of Medical Oncology, Hospital Universitario Ramón y Cajal, Madrid, Spain
5. Department of Medical Oncology, Hospital Universitario Central de Asturias, Asturias, Spain
6. Department of Medical Oncology, Hospital Universitario Miguel Servet, IIS Aragón, Zaragoza, Spain
7. Department of Medical Oncology, Hospital Virgen de La Cinta de Tortosa, Tarragona, Spain
8. Department of Medical Oncology, Hospital Universitari Arnau de Vilanova de Lleida, Lleida, Spain
9. Department of Medical Oncology & Health Research Institute, Hospital Clínico Universitario de Santiago de Compostela, CIBERONC, Santiago de Compostela, A Coruña, Spain
10. Department of Medical Oncology, Hospital Universitario de Salamanca, Salamanca, Spain
11. Department of Medical Oncology, Hospital San Pedro de Alcántara, Cáceres, Spain
12. Department of Medical Oncology, Hospital Universitario Son Espases, Palma, Spain
13. Department of Medical Oncology, Hospital La Paz, Madrid, Spain
14. Department of Medical, Angelini Pharma España SLU
15. Department of Medical Oncology, Hospital General Universitario de Valencia, Department of Medicine, Universidad de Valencia; CIBERONC, Spain