1. Rheumatic Diseases Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
2. Department of Pathology, Mashhad University of Medical Sciences, Mashhad, Iran
3. Preventive Cardiovascular Care Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
4. Golestan Rheumatology Research Center, Golestan University of Medical Sciences, Gorgan, Iran
5. Student Research Committee, Golestan University of Medical Sciences, Gorgan, Iran