1. Department of Physical Therapy, School of Allied Health Professions, Loma Linda University, Loma Linda, CA, USA
2. Department of Epidemiology and Biostatistics, School of Public Health, Loma Linda University, Loma Linda, CA, USA
3. Department of Physical Therapy, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
4. Department of Physical Therapy, Prince Faisal Bin Fahad Hospital for Sports Medicine, Riyadh, Saudi Arabia