<affiliation wicri:level="2"><nlm:affiliation>Department of Biostatistics and Applied Mathematics, M. D. Anderson Cancer Center University of Texas, 1515 Holcombe Boulevard, Box 447, Houston, TX 77030, USA. yshen@mdanderson.org</nlm:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Department of Biostatistics and Applied Mathematics, M. D. Anderson Cancer Center University of Texas, 1515 Holcombe Boulevard, Box 447, Houston, TX 77030</wicri:regionArea>
<placeName><region type="state">Texas</region>
</placeName>
</affiliation>