<affiliation wicri:level="2"><nlm:affiliation>Department of Orthopaedic Surgery and Sports Medicine, and the Biostatistics Consulting Center, Temple University School of Medicine, Philadelphia, PA; Department of Orthopaedics, University of Pittsburgh, Pittsburgh, PA.</nlm:affiliation>
<country xml:lang="fr">États-Unis</country>
<placeName><region type="state">Pennsylvanie</region>
</placeName>
<wicri:cityArea>Department of Orthopaedic Surgery and Sports Medicine, and the Biostatistics Consulting Center, Temple University School of Medicine, Philadelphia, PA; Department of Orthopaedics, University of Pittsburgh, Pittsburgh</wicri:cityArea>
</affiliation>