1. Department of Radiation Oncology, Faculty of Medicine, Adana Dr. Turgut Noyan Research and Treatment Center, Baskent University, Adana, Turkey
2. Department of Radiation Oncology, Faculty of Medicine, Başkent University, Ankara, Turkey
3. Department of Radiation Oncology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
4. Division of Radiation Oncology, Iskenderun Gelisim Hospital, Iskenderun, Turkey
5. Department of Radiation Oncology, Faculty of Medicine, Ankara University, Ankara, Turkey