1. Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran;
2. Students’ Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran;
3. Bone and Joint Diseases Research Center, Department of Physical Medicine and Rehabilitation, Shiraz University of Medical Sciences, Shiraz, Iran;
4. Shiraz Geriatric Research Center, Shiraz University of Medical Sciences, Shiraz, Iran;
5. Department of Epidemiology and Biostatistics, Faculty of Health, Shahrekord University of Medical Sciences, Shahrekord, Iran