1. Connective Tissue Diseases Research Center Tabriz University of Medical Sciences Tabriz Iran
2. Tuberculosis and Lung Disease Research Center Tabriz University of Medical Sciences Tabriz Iran
3. Rahat Breath and Sleep Research Center Tabriz University of Medical Sciences Tabriz Iran
4. Internal Medicine Department Kashan University of Medical Sciences Kashan Iran
5. Student Research Committee Tabriz University of Medical Sciences Tabriz Iran