1. Department of Medical Radiation Engineering; Shahid Beheshti University; Tehran Islamic Republic of Iran
2. Department of Radiotherapy; Tehran University of Medical Science; Tehran Iran
3. Department of Brachytherapy; Pars Hospital; Tehran Iran
4. Department of Radiotherapy; Hafte Tir Hospital; Tehran Iran
5. Department of Radiotherapy and Oncology; Comprehensive Cancer Center, Medical University of Vienna; Austria
6. Centre intégré de cancérologie de la Montérégie (CICM) Charles LeMoyne Hospital; Greenfield Park QC Canada