1. Brucellosis Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
2. Department of Infectious Diseases, Sina Hospital, Hamadan University of Medical Sciences, Hamadan, Iran
3. Infectious Diseases Specialist, Homozgan University of Medical Sciences, Bandar Abbas, Iran
4. Research Center for Health Sciences and Department of Epidemiology, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
5. Department of Pathology, Sina Hospital, Hamadan University of Medical Sciences, Hamadan, Iran
6. Department of Biostatistics, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran