1 Istanbul University, Cerrahpasa Medical School Department of Radiation Oncology, Cerrahpasa, Istanbul, Turkey. 2 Department of Radiation Oncology, Tata Memorial Hospital, Parel, Mumbai, India. 3 Faculty of Medicine, Suez Canal University, Suez, Egypt. 4 Al-Soliman Radiation Oncology Unit, Port Said Early Detection and Cancer Chemotherapy Unit, Port Said General Hospital, Insurance Hospitals, ...