M.R. Helvaci, F. Ozcura, A. Ozkan and H. Dayioglu
Journal of Medical Sciences 6 ( 4 ): 654 - 657 , 2006
I Yigitoglu, F Oner, H. A Yalim, A Akkurt, A Okur and A. Ozkan
Radiation Protection Dosimetry 142 ( 2-4 ): 358 - 362 , 2010