1. Swiss Physical Therapy Center, Giza, Egypt
2. Medical Application of Laser Department, National Institute of Laser Enhanced Sciences, Cairo University, Egypt
3. Medical Application of Laser Department, National Institute of Laser Enhanced Sciences, Cairo University, Egypt; Physical Therapy for Orthopedic and Orthopedic Surgery, Cairo University, Egypt
4. Taibah University, Kingdom of Saudi Arabia; Centre for Rehabilitation Sciences, University of Manchester, United Kingdom