aDepartment of Radiation Oncology, Ankara Etlik State Hospital

bDepartment of Radiation Oncology, Hacettepe University Faculty of Medicine, Ankara, Turkey

Correspondence to Melek Tugce Yilmaz, MD, Department of Radiation Oncology, Ankara Etlik State Hospital, 06170, Ankara, Turkey, Tel: +90 5438821665; e-mail: [email protected]