1. Division of Microbiology Department of Pathobiology School of Public Health Tehran University of Medical Sciences Tehran Iran
2. Department of Microbiology School of Medicine Iran University of Medical Sciences Tehran Iran
3. Department of Microbiology Reference Health Laboratories Ministry of Health Tehran Iran
4. Department of Microbiology Faculty of Medicine Shahid Beheshti University of Medical Sciences Tehran Iran
5. Food Microbiology Research Center Tehran University of Medical Sciences Tehran Iran