1. Department of Biostatistics, Faculty of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
2. Department of Epidemiology and Biostatistics, Faculty of Health, Shahrekord University of Medical Sciences, Shahrekord, 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. PhD of media management, University of applied sciences and technology, Iran
6. Department of media Management, Faculty of management, University of Tehran, Tehran, Iran