1. Department of Medical Oncology, 12 de Octubre Hospital, 28041 Madrid, Spain
2. Department of Medical Oncology, Sapienza University of Rome, 00100 Rome, Italy
3. Lung Cancer Clinical Research Group, Spanish National Cancer Research Center (CNIO), 28029 Madrid, Spain
4. Ciberonc, 28029 Madrid, Spain
5. Medicine Department, Medicine Faculty, Complutense University, 28040 Madrid, Spain