Institution: | 1.Physics Department, Hakim Sabzevari University, Tohid Shahr St., 617976487, P.O. Box: 397, Sabzevar, Iran ;2.Radiation Medicine Department, Shahid Beheshti University, Tehran, Iran ;3.Department of Medical Physics and Radiological Sciences, Sabzevar University of Medical Sciences, Sabzevar, Iran ;4.Medical Physics Department, Iran University of Medical Sciences, Tehran, Iran ; |