Affiliation: | 1. Department of Orthopaedic Surgery, Horsens Regional Hospital, Sundvej 30, 8700, Horsens, Denmark 2. Department of Anaesthesiology, Aarhus University Hospital, Tage Hansens Gade 4, 8000, ?rhus C, Denmark 3. Department of Orthopaedic Surgery, Aarhus University Hospital, Tage Hansens Gade 4, 8000, ?rhus C, Denmark 4. Danish Pain Research Centre, Aarhus University Hospital, N?rrebrogade 44, 8000, ?rhus C, Denmark
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