<affiliation wicri:level="2"><nlm:affiliation>Botswana-University of Pennsylvania Partnership, P.O. Box AC 157 ACH, Gaborone, Botswana; Perelmann School of Medicine, University of Pennsylvania, Building 421, 5162, 3400 Civic Center Boulevard, Philadelphia, PA 19104, United States.</nlm:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Botswana-University of Pennsylvania Partnership, P.O. Box AC 157 ACH, Gaborone, Botswana; Perelmann School of Medicine, University of Pennsylvania, Building 421, 5162, 3400 Civic Center Boulevard, Philadelphia, PA 19104</wicri:regionArea>
<placeName><region type="state">Pennsylvanie</region>
</placeName>
</affiliation>