1. Department of Orthopaedic Surgery; Ain Shams University; Cairo Egypt
2. Department of Trauma and Orthopaedics; Queen Elizabeth Hospital; Birmingham UK
3. Cochrane Response; Cochrane; London UK
4. Birmingham Acute Care Research Group, Institute of Inflammation and Ageing; University of Birmingham; Birmingham UK
5. Nuffield Department of Clinical Neurosciences; University of Oxford, John Radcliffe Hospital; Oxford UK
6. Department of Obstetrics and Gynaecology, Faculty of Medicine; Ain Shams University; Cairo Egypt