<affiliation wicri:level="2"><nlm:aff id="I1">Graduate Program in Molecular Biophysics and Structural Biology, University of Pittsburgh and Carnegie Mellon University, Pittsburgh, PA 15260, USA</nlm:aff>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Graduate Program in Molecular Biophysics and Structural Biology, University of Pittsburgh and Carnegie Mellon University, Pittsburgh, PA 15260</wicri:regionArea>
<placeName><region type="state">Pennsylvanie</region>
</placeName>
</affiliation>