1. Research Center for Environmental Determinants of Health, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
2. Department of Biostatistics, School of Public Health and Research Center for Health Sciences, Hamadan University of Medical Sciences, Hamadan, Iran
3. Clinical Research Development Center, Imam Reza Hospital, Kermanshah University of Medical Sciences, Kermanshah, Iran
4. Infectious Disease Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
5. Department of Immunology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran