1. Department of Virology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
2. Infectious Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran.
3. Department of Microbiology and Virology, Kerman University of Medical Sciences, Kerman, Iran.
4. Department of Microbiology, Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran.
5. Student Research Committee, Iran University of Medical Sciences, Tehran, Iran.