1. Dental Implant Research Center and Dental Research Center, Department of Oral Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
2. Department of Oral Medicine, Dental School, Hamadan University of Medical Sciences, Hamadan, Iran
3. Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
4. Research Center for Health Sciences and Department of Epidemiology, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran