1. Plastic and Reconstructive Surgery Unit Suez Canal University Hospitals and Medical School Ismailia Egypt
2. Department of Orthopaedic Surgery, Hand and Microsurgery Unit, Faculty of Medicine Minia University Minia Egypt
3. Department of Neurosurgery, Faculty of Medicine Port Said University Port Said Egypt
4. Rheumatology and Rehabilitation Department, Faculty of Medicine Minia University Minia Egypt
5. Rheumatology and Rehabilitation Department, Faculty of Medicine Port Said University Port Said Egypt