1. Speciality Registrar, Department of Trauma and Orthopaedics, Centre for Hip Surgery, Wrightington Hospital, Wigan WN6 9EP
2. Consultant Trauma and Orthopaedic Surgeon, Department of Trauma and Orthopaedics, Centre for Hip Surgery, Wrightington Hospital, Wigan
3. Professor of Orthopaedics, Centre for Hip Surgery, Wrightington Hospital, Wigan