?:authorAffiliation
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[\'Department of Orthopedic Surgery, Akershus University Hospital, Lørenskog, Norway.\', \'Department of Health Management and Health Economics, Institute of Health and Society, University of Oslo, Norway.\', \'Department of Orthopaedics, Institute of Clinical Sciences Sahlgrenska Academy, University of Gothenburg, Sweden.\', \'Lovisenberg Diaconal Hospital, Oslo, Norway.\']
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