?:authorAffiliation
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[\'Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg.\', \'Department of Orthopaedics, Sahlgrenska University Hospital, Gothenburg/Mölndal.\', \'Centre of Registers Västra Götaland.\', \'Section of Orthopaedics, Department of Surgical Sciences, Uppsala University, Uppsala.\', \'Department of Orthopaedics, Uppsala University Hospital, Uppsala, Sweden.\']
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