1. Department of Bacteriology and Virology, Shiraz University of Medical Sciences, Shiraz, Iran.
2. Department of Virology, Tehran University of Medical Sciences, Tehran, Iran.
3. Shiraz Institute for Cancer Research, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
4. Health Policy Research Center, Institute of Heath, Shiraz University of Medical Sciences, Shiraz, Iran.
5. Gastroenterohepatology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.