1. University of Washington School of Medicine, Department of Medicine, Division of Hematology-Oncology, Seattle, WA
2. Fred Hutchinson Cancer Center, Clinical Research Division, Seattle, WA
3. Dana-Farber Cancer Center, Department of Medical Oncology, Boston, MA
4. Harvard Medical School, Boston, MA
5. Erasmus MC Cancer Institute, Department of Surgery, Rotterdam, the Netherlands
6. Erasmus MC Cancer Institute, Department of Medical Oncology, Rotterdam, the Netherlands