1 Kellogg College, University of Oxford, Oxford, United Kingdom; Division of Plastic and Reconstructive Surgery, Department of Surgery, University of Texas Health Science Center at San Antonio, San Antonio, United States of America.
2 Facultad de Ciencias para el Cuidado de la Salud, Universidad San Sebastian, Santiago, Chile.
3 Division of Plastic and Reconstructive Surgery, Department of Surgery, University of Texas Health Science Center at San Antonio, San Antonio, United States of America.
4 Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom.
5 The Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedic, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom.