[1] Royal Berkshire Hosp, Reading, Berks, England
[2] Oxford Univ Hosp, Oxford, England
[3] Royal London Hosp, London, England
[4] Buckinghamshire Healthcare, Amersham, England
[5] Queen Elizabeth Hosp, Woolwich, England
[6] Northumbria Healthcare, Newcastle Upon Tyne, Tyne & Wear, England
[7] Southmead Hosp, Bristol, Avon, England
[8] Morriston Hosp, Swansea, W Glam, Wales
[9] Univ Oxford, Oxford Trauma & Emergency Care, Nuffield Dept Orthopaed Rheumatol & Musculoskelet, Oxford, England
[10] Queen Mary Univ London, Barts & London Sch Med & Dent, Div Orthopaed, London, England
[11] Barts Hlth NHS, Royal London Hosp, London, England