<affiliation wicri:level="4"><nlm:affiliation>Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.</nlm:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina</wicri:regionArea>
<placeName><region type="state">Caroline du Nord</region>
<settlement type="city">Chapel Hill (Caroline du Nord)</settlement>
</placeName>
<orgName type="university">Université de Caroline du Nord à Chapel Hill</orgName>
</affiliation>