Affiliation: | 1. Orthopaedic and Trauma Surgery Department, H?pital Pierre Paul Riquet, Centre Hospitalier Universitaire de Toulouse, Toulouse, France 3. Epidemiology Department, Toulouse Purpan Faculty of Medicine, Université Paul Sabatier, Toulouse, France 2. Orthopaedic and Trauma Surgery Department, H?pital Pierre-Paul Riquet, Place du Docteur Baylac, TSA 40031 31059, Toulouse, cedex 9, France
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