1. Clinical Research Development Center of Rofeideh Rehabilitation Hospital, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
2. Physical Medicine and Rehabilitation Research Center, Shahid Beheshti University of Medical Sciences (SBUMS), Tehran, Iran
3. Department of Clinical Sciences, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
4. Department of Biostatistics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran