1. Department of Oncology & Radiotherapy, Maria Sklodowska Curie National Cancer Research Institute, Warsaw, Poland
2. Department of Medical Oncology, Hospital Universitario de Salamanca-IBSAL, Salamanca, Spain
3. Department of Oncology, University Hospital of Jaén, Jaén, Spain
4. Global Medical Affairs, Amgen Inc., Thousand Oaks, CA91320, USA
5. Centre Oncologie et Radiothérapie, Chambray-lès-Tours, Centre-Val de Loire, France