1 The Newcastle upon Tyne Hospitals, NHS Foundation Trust. Newcastle upon Tyne, United Kingdom; Kellogg College, University of Oxford, Oxford OX2 6PN, United Kingdom. Electronic address: juan.berner@nhs.net.
2 BG Klinik Ludwigshafen. Ludwigshafen am Rhein, Germany; Ruprecht Karl University of Heidelberg, Heidelberg, Germany.
3 Imperial College Healthcare NHS Trust, London, United Kingdom.
4 University Department of Hand Surgery and Rehabilitation, San Giuseppe Hospital, IRCCS MultiMedica Group, Milan, Italy.
5 The Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedic, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom.
6 Imperial College Healthcare NHS Trust, London, United Kingdom; Nuffield Department of Orthopaedic, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom.