1. Rheumatic Diseases Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
2. Fellowship of Echocardiography, Vascular Surgery Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
3. Mashhad University of Medical Sciences, Mashhad, Iran
4. Akbar Clinical Research & Development Unit, Mashhad University of Medical Sciences, Mashhad, Iran