1. Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
2. Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran.
3. Department of Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
4. Department of Applied Cell Sciences, School of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran. Introduction