1. Department of Physiotherapy, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
2. Department of Physiotherapy, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
3. Medical Faculty, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
4. Department of Physical Therapy, School of Paramedical Sciences, Mashhad University of Medical Sciences, Mashhad, Iran
5. Orthopedic Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
6. Department of Biostatics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran