1. Research Center for Clinical Virology Tehran University of Medical Sciences Tehran Iran
2. Department of Virology School of Public Health Tehran University of Medical Sciences Tehran Iran
3. Infectious and Tropical Disease Research Center Tabriz University of Medical Sciences Tabriz Iran
4. Department of Bacteriology and Virology, School of Medicine Tabriz University of Medical Sciences Tabriz Iran
5. Liver Transplantation Research Center Tehran University of Medical Sciences Tehran Iran
6. Department of Virology Iran University of Medical Sciences Tehran Iran