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, Acibadem University, Istanbul, Turkey
4. Department of Radiation Oncology, University Hospital, Geneva, Switzerland
5. Department of Radiation Oncology, Medstar Antalya Hospital, Antalya, Turkey
6. Division of Radiotherapy, University of Piemonte Orientale, Novara, Italy
7. Radiotherapy Service, Clinica Luganese SA no profit, Lugano, Switzerland
8. Department of Radiation Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, China
9. Department of Radiotherapy, Ospedale S. Anna, Como, Italy
10. Department of Radiation Therapy and Breast Center, Henri Mondor University Hospital, Université Paris Est Créteil (UPEC), Créteil, France
11. Radiation Oncology, Institut Català d'Oncologia, Badalona, Barcelona, Catalonia, Spain
12. Department of Radiation Oncology, Istanbul Bilim University, Istanbul, Turkey
13. Department of Radiation Oncology, Ram Bam Medical Center, Haifa, Israel
14. Department of Radiation Oncology, Mayo Clinic, Rochester, MN, USA