1. Department of Medical Oncology, Hospital Universitario 12 de Octubre, Madrid, Spain
2. H12O-CNIO Lung Cancer Clinical Research Unit, Health Research Institute Hospital Universitario 12 de Octbure (i+12)/Spanish National Cancer Research Center (CNIO), Madrid, Spain
3. Department of Medical Oncology, Hospital Universitario Virgen de la Victoria, Málaga, Spain
4. CIBERONC, Madrid, Spain
5. Department of Medicine, Complutense University, Madrid, Spain