1. Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
2. NRG Oncology Statistics and Data Management Center, Philadelphia, Pennsylvania, USA
3. Baptist Hospital of Miami, Miami, Florida, USA
4. National Institutes of Health Clinical Center, Bethesda, Maryland, USA
5. University of Texas–MD Anderson Cancer Center, Houston, Texas, USA
6. Mayo Clinic, Rochester, Minnesota, USA
7. Saint Joseph’s Hospital and Medical Center ACCRUALS for Arizona Oncology Services Foundation, Phoenix, Arizona, USA
8. Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
9. Intermountain Medical Center, Murray, Utah, USA
10. Paulus Stradins Clinical University Hospital–EORTC, Riga, Latvia
11. Bristol Oncology Center–EORTC, Bristol, United Kingdom
12. McGill University, Montreal, Quebec, Canada
13. University of Wisconsin Hospital, Madison, Wisconsin, USA
14. UPMC-Shadyside Hospital, Pittsburgh, Pennsylvania, USA
15. University of Utah Health Science Center, Salt Lake City, Utah, USA
16. Willamette Valley Cancer Institute, Eugene, Oregon, USA
17. Washington University, St Louis, Missouri, USA