1. Medical Oncology Department; Hospital 12 De Octubre; Madrid Spain
2. Medical Oncology Department; Hospital Clínico San Carlos; Madrid Spain
3. Medical Oncology Department; Hospital “Fundacion Jiménez Díaz”; Madrid Spain
4. Medical Oncology Department; Hospital Infanta Cristina; Badajoz Spain
5. Medical Oncology Department; Hospital San Pedro de Alcántara; Cáceres Spain
6. Medical Oncology Department; Hospital Severo Ochoa; Leganés Spain
7. Medical Oncology Department; Hospital Ramón y Cajal; Madrid Spain
8. Medical Oncology Department; Hospital de León; León Spain
9. Medical Oncology Department; Hospital Fundación Alcorcón; Alcorcón Spain
10. Medical Oncology Department; Hospital La Princesa; Madrid Spain
11. Medical Oncology Department; Hospital Virgen de la Salud; Toledo Spain