1 Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom, GKT School of Medical Education, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom.
2 Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom.
3 Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom, Section of Vascular Surgery, Department of Surgery and Cancer, Imperial College London, London, United Kingdom.
4 Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom, Department of Plastic Surgery, Stoke Mandeville Hospital, Aylesbury, United Kingdom.