1. Department of Oral medicine, Dental faculty Babol University of Medical Sciences Babol Iran
2. Dental Research Center Golestan University of Medical Sciences Gorgan Iran
3. Metabolic Disorders Research Center Golestan University of Medical Sciences Gorgan Iran
4. Stem Cell Research Center Golestan University of Medical Sciences Gorgan Iran
5. Department of Biostatics, Faculty of Health Golestan University of Medical Sciences Gorgan Iran