1. Department of Radiation Oncology, University of Lausanne Medical Center, Lausanne, Switzerland
2. Department of Radiation Oncology, Centre Lacassagne, Nice, France
3. Department of Radiation Oncology, CHRU, Besancon, France
4. Department of Radiation Oncology, Acibadem University, Istanbul, Turkey
5. Department of Oncology, Aarhus University Hospital, Aarhus, Denmark
6. Division of Radiation Oncology, M.D. Anderson Cancer Center, Houston, TX, USA
7. Department of Radiation Oncology, Mayo Clinic, Rochester, MN, USA
8. Department of Radiation Oncology, Institut Jules Bordet, Brussels, Belgium
9. Division of Radiotherapy, University of Piemonte Orientale, Novara, Italy
10. Department of Thoracic Surgery, Sun Yat-Sen University Cancer Center, Guangzhou, China