<affiliation wicri:level="2"><nlm:affiliation>*Magee-Womens Hospital of UPMC, Pittsburgh, Pennsylvania †Temple University School of Medicine, Philadelphia, Pennsylvania ‡Department of Anesthesiology, West Virginia University School of Medicine, Morgantown, West Virginia.</nlm:affiliation>
<country xml:lang="fr">États-Unis</country>
<placeName><region type="state">Virginie-Occidentale</region>
</placeName>
<wicri:cityArea>*Magee-Womens Hospital of UPMC, Pittsburgh, Pennsylvania †Temple University School of Medicine, Philadelphia, Pennsylvania ‡Department of Anesthesiology, West Virginia University School of Medicine, Morgantown</wicri:cityArea>
</affiliation>