1. South Wales Orthopaedic Research Network, Cardiff University, Welshbone, Cardiff, United Kingdom
2. Princess of Wales Hospital, Abertawe Bro Morgannwg University Health Board, Bridgend, United Kingdom
3. Grantham and District Hospital, United Lincolnshire Hospitals NHS Trust, Lincoln, United Kingdom
4. Department of Trauma and Orthopaedic, LEO Institute, Grantham, United Kingdom