1. Université Pierre et Marie Curie-Paris 6; Paris 75005 France
2. Hamon Center for Therapeutic Oncology Research and Department of Pharmacology; UT Southwestern Medical Center; Dallas Texas 75390-8593
3. Erasmus MC Cancer Institute; Rotterdam 3015 CN The Netherlands
4. Hamon Center for Therapeutic Oncology Research and Departments of Internal Medicine and Pharmacology; University of Texas Southwestern Medical Center Dallas; Dallas Texas
5. Hamon Center for Therapeutic Oncology Research and Department of Pathology; University of Texas Southwestern Medical Center Dallas; Dallas Texas
6. Karolinska Institute Department of Oncology-Pathology Cancer Center Karolinska (CCK); Stockholm SE-171 76 Sweden