1. University of Pennsylvania
2. Mayo Clinic
3. Austrian Breast & Colorectal Cancer Study Group
4. Hospital General Universitario Gregorio Marañón
5. Dana-Farber Cancer Institute
6. Medical University of Vienna
7. Calvary Mater Newcastle Hospital
8. Johns Hopkins University
9. Vall d'Hebron Hospital Universitari
10. Yale Cancer Center
11. Medical University of Graz
12. Indiana University
13. European Institute of Oncology
14. Memorial Sloan Kettering Cancer Center
15. National Institute of Oncology
16. The Edinburgh Cancer Research Centre
17. Vanderbilt University
18. The Maria Sklodowska-Curie National Research Institute of Oncology
19. Aichi Cancer Center
20. NSABP Foundation
21. Hospital Universitari Sant Joan de Reus
22. University of California, San Francisco
23. Hospital São Lucas da PUCRS
24. Breast International Group
25. Pfizer (United States)
26. Alliance Foundation Trials