1. Department of Microbiology and Food Hygiene, Faculty of Veterinary Medicine, Lorestan University, Khorramabad, Iran.
2. Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
3. Department of Parasitology and Mycology, Faculty of Medicine, Mazandaran University of Medical Science, Sari, Iran.
4. Hepatitis Research Center, School of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran.